ACS/WFC Image Reduction

REQUIREMENT: Before proceeding, install or update your stenv distribution. stenv is the replacement for AstroConda, which is unsupported as of February 2023.

ACS/WFC Image Reduction#

Introduction#

This notebook covers the steps necessary to calibrate Advanced Camera for Surveys (ACS) Wide Field Channel (WFC) observations to produce a distortion-corrected image ready for photometry.

For most observations, reprocessing the raw files with the calibration pipeline is no longer required as the MAST archive is now static and any changes to the pipeline or reference files automatically triggers a reprocessing of the data. However, users may wish to reprocess their data with custom reference files.

This notebook is intended for users with a (very!) basic understanding of python and photometry.

You will need approximately 13 GB of space available for this exercise.

This tutorial will show you how to…#

1. Calibrate Raw Files#

  • Query the Calibration Reference Data System (CRDS) for the current best reference files applicable to a given observation

  • Update the *_raw.fits primary headers with new calibration information

  • Retrieve calibration files from CRDS and set up the reference file directory

  • Process files with calacs

2. Update the WCS#

  • Update the FLT/FLC file WCS header keywords

Imports#

Here we list the Python packages used in this notebook. Links to the documentation for each module is provided for convenience.

Package Name

module

docs

used for

os

system

link

command line input

os

environ

link

setting environments

shutil

rmtree

link

remove directory tree

glob

glob

link

search for files based on Unix shell rules

astroquery.mast

Observations

link

download data from MAST

astropy.io

fits

link

access and update fits files

astropy.table

Table

link

constructing and editing in a tabular format

stwcs

updatewcs

link

update wcs solution

 
import os
import shutil
import glob

from astroquery.mast import Observations

from astropy.io import fits

from stwcs import updatewcs

from p_module import plot

Download the Data #

Here we download all of the data required for this notebook. This is an important step! Some of the image processing steps require all relevant files to be in the working directory. We recommend working with a brand new directory for every new set of data.

GO Proposal 10775: “An ACS Survey of Galactic Globular Clusters”#

For this example, we will only retreive data associated with the Observation ID J9L960010. Using the python package astroquery, we can access the MAST archive.

We will need to grab the raw files, the telemetry files, and the association file for this observation set.

MAY CHANGE: The argument "mrp_only" stands for "minimum recommended products only". It currently needs to be set to False, although in the future, False is intended to be set as the default and can be left out. 
obs_table = Observations.query_criteria(proposal_id=10775, obs_id='J9L960010')


dl_table = Observations.download_products(obs_table['obsid'],
                                          productSubGroupDescription=['RAW', 'ASN', 'SPT'],
                                          mrp_only=False)

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960010_asn.fits to ./mastDownload/HST/j9l960010/j9l960010_asn.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960010_spt.fits to ./mastDownload/HST/j9l960010/j9l960010_spt.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960a7q_raw.fits to ./mastDownload/HST/j9l960a7q/j9l960a7q_raw.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960a7q_spt.fits to ./mastDownload/HST/j9l960a7q/j9l960a7q_spt.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960a9q_raw.fits to ./mastDownload/HST/j9l960a9q/j9l960a9q_raw.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960a9q_spt.fits to ./mastDownload/HST/j9l960a9q/j9l960a9q_spt.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960abq_raw.fits to ./mastDownload/HST/j9l960abq/j9l960abq_raw.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960abq_spt.fits to ./mastDownload/HST/j9l960abq/j9l960abq_spt.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960adq_raw.fits to ./mastDownload/HST/j9l960adq/j9l960adq_raw.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960adq_spt.fits to ./mastDownload/HST/j9l960adq/j9l960adq_spt.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960afq_raw.fits to ./mastDownload/HST/j9l960afq/j9l960afq_raw.fits ...

 [Done]

Downloading URL https://mast.stsci.edu/api/v0.1/Download/file?uri=mast:HST/product/j9l960afq_spt.fits to ./mastDownload/HST/j9l960afq/j9l960afq_spt.fits ...

 [Done]

We’ll use the packages os and shutil to put all of these files in our working directory and do a little housekeeping.

for row in dl_table:
    oldfname = row['Local Path']
    newfname = os.path.basename(oldfname)
    os.rename(oldfname, newfname)
    
# Delete the mastDownload directory and all subdirectories it contains.
shutil.rmtree('mastDownload')

Here we set our filenames to variable names for convenience using glob.glob.

asn_file = 'j9l960010_asn.fits'
raw_files = glob.glob('*_raw.fits')

File Information#

The structure of the fits files from ACS may be different depending on what kind of observation was made. For more information, refer to Section 2.2 of the ACS Data Handbook.

Association Files#

Ext

Name

Type

Contains

0

PRIMARY

(PrimaryHDU)

Meta-data related to the entire file.

1

ASN (Association)

(BinTableHDU)

Table of files associated with this group.

Raw Files (WFC-Specific)#

Ext

Name

Type

Contains

0

PRIMARY

(PrimaryHDU)

Meta-data related to the entire file.

1

SCI (Image)

(ImageHDU)

WFC2 raw image data.

2

ERR (Error)

(ImageHDU)

WFC2 error array.

3

DQ (Data Quality)

(ImageHDU)

WFC2 data quality array.

4

SCI (Image)

(ImageHDU)

WFC1 raw image data.

5

ERR (Error)

(ImageHDU)

WFC1 error array.

6

DQ (Data Quality)

(ImageHDU)

WFC1 data quality array.

You can always use .info() on an HDUlist for an overview of the structure

with fits.open(asn_file) as hdulist:
    hdulist.info()
    
with fits.open(raw_files[0]) as hdulist:
    hdulist.info()

Filename: j9l960010_asn.fits
No.    Name      Ver    Type      Cards   Dimensions   Format
  0  PRIMARY       1 PrimaryHDU      44   ()      
  1  ASN           1 BinTableHDU     25   6R x 3C   [14A, 14A, L]   

Filename: j9l960adq_raw.fits
No.    Name      Ver    Type      Cards   Dimensions   Format
  0  PRIMARY       1 PrimaryHDU     222   ()      
  1  SCI           1 ImageHDU        97   (4144, 2068)   int16 (rescales to uint16)   
  2  ERR           1 ImageHDU        49   ()      
  3  DQ            1 ImageHDU        41   ()      
  4  SCI           2 ImageHDU        97   (4144, 2068)   int16 (rescales to uint16)   
  5  ERR           2 ImageHDU        49   ()      
  6  DQ            2 ImageHDU        43   ()      

!conda list hstcal

# packages in environment at /usr/share/miniconda/envs/hstcal:
#
# Name                    Version                   Build  Channel
hstcal                    3.0.3                hc213fb8_0    conda-forge

Calibrate Raw Files #

Now that we have the *_raw.fits files, we can process them with the ACS calibration pipeline calacs.

Updating Headers for CRDS#

By default, the association file will trigger the creation of a drizzled product. In order to avoid this, we will filter the association file to only include table entries with MEMTYPE equal to ‘EXP-DTH’. This will remove the ‘PROD-DTH’ entry that prompts AstroDrizzle.

with fits.open(asn_file, mode='update') as asn_hdu:
    asn_tab = asn_hdu[1].data
    asn_tab = asn_tab[asn_tab['MEMTYPE'] == 'EXP-DTH']

Due to the computationally intense processing required to CTE correct full-frame ACS/WFC images, we have disabled the CTE correction here by default, however it can be turned on by changing the following variable to True:

cte_correct = False

Calibration steps can be enabled or disabled by setting the switch keywords in the primary header to ‘PERFORM’ or ‘OMIT’, respectively. Switch keywords all end with the string CORR (e.g., BLEVCORR and DARKCORR). In this case, we want to update PCTECORR.

for file in raw_files:
    
    if cte_correct: 
        value = 'PERFORM'
    else: 
        value = 'OMIT'
        
    fits.setval(file, 'PCTECORR', value=value)

Querying CRDS for Reference Files#

Before running calacs, we need to set some environment variables for several subsequent calibration tasks.

We will point to a subdirectory called crds_cache/ using the JREF environment variable. The JREF variable is used for ACS reference files. Other instruments use other variables, e.g., IREF for WFC3.

os.environ['CRDS_SERVER_URL'] = 'https://hst-crds.stsci.edu'
os.environ['CRDS_SERVER'] = 'https://hst-crds.stsci.edu'
os.environ['CRDS_PATH'] = './crds_cache'
os.environ['jref'] = './crds_cache/references/hst/acs/'

The code block below will query CRDS for the best reference files currently available for these datasets, update the header keywords to point “to these new files. We will use the Python package os to run terminal commands. In the terminal, the line would be:

crds bestrefs --files [filename] --sync-references=1 --update-bestrefs

…where ‘filename’ is the name of your fits file.

for file in raw_files:
    !crds bestrefs --files {file} --sync-references=1 --update-bestrefs

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_wf4tfile_0250.rmap       678 bytes  (1 / 142 files) (0 / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_shadfile_0250.rmap       977 bytes  (2 / 142 files) (678 / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_offtab_0250.rmap         642 bytes  (3 / 142 files) (1.7 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_maskfile_0250.rmap       685 bytes  (4 / 142 files) (2.3 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_idctab_0250.rmap         696 bytes  (5 / 142 files) (3.0 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_flatfile_0250.rmap    30.0 K bytes  (6 / 142 files) (3.7 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_dgeofile_0250.rmap       801 bytes  (7 / 142 files) (33.7 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_darkfile_0250.rmap   178.4 K bytes  (8 / 142 files) (34.5 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_biasfile_0250.rmap     3.3 K bytes  (9 / 142 files) (212.8 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_atodfile_0250.rmap       874 bytes  (10 / 142 files) (216.1 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfpc2_0250.imap                782 bytes  (11 / 142 files) (217.0 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_snkcfile_0003.rmap        681 bytes  (12 / 142 files) (217.8 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_satufile_0002.rmap      1.0 K bytes  (13 / 142 files) (218.5 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_pfltfile_0253.rmap     34.2 K bytes  (14 / 142 files) (219.5 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_pctetab_0004.rmap         698 bytes  (15 / 142 files) (253.7 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_oscntab_0250.rmap         747 bytes  (16 / 142 files) (254.4 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_npolfile_0254.rmap      4.0 K bytes  (17 / 142 files) (255.1 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_nlinfile_0250.rmap        726 bytes  (18 / 142 files) (259.2 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_mdriztab_0254.rmap        845 bytes  (19 / 142 files) (259.9 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_imphttab_0256.rmap        683 bytes  (20 / 142 files) (260.7 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_idctab_0254.rmap          661 bytes  (21 / 142 files) (261.4 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_flshfile_0256.rmap      5.8 K bytes  (22 / 142 files) (262.1 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_drkcfile_0195.rmap    236.1 K bytes  (23 / 142 files) (267.9 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_dfltfile_0002.rmap     17.1 K bytes  (24 / 142 files) (503.9 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_darkfile_0493.rmap    277.2 K bytes  (25 / 142 files) (521.1 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_d2imfile_0251.rmap        605 bytes  (26 / 142 files) (798.3 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_crrejtab_0250.rmap        803 bytes  (27 / 142 files) (798.9 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_ccdtab_0250.rmap          799 bytes  (28 / 142 files) (799.7 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_bpixtab_0311.rmap      11.8 K bytes  (29 / 142 files) (800.5 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_biasfile_0267.rmap     23.4 K bytes  (30 / 142 files) (812.2 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_biacfile_0003.rmap        692 bytes  (31 / 142 files) (835.6 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_atodtab_0250.rmap         651 bytes  (32 / 142 files) (836.3 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_wfc3_0597.imap               1.3 K bytes  (33 / 142 files) (836.9 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_synphot_tmttab_0002.rmap       745 bytes  (34 / 142 files) (838.2 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_synphot_tmgtab_0012.rmap       767 bytes  (35 / 142 files) (839.0 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_synphot_tmctab_0055.rmap       743 bytes  (36 / 142 files) (839.7 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_synphot_thruput_0059.rmap  329.6 K bytes  (37 / 142 files) (840.5 K / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_synphot_thermal_0003.rmap   20.4 K bytes  (38 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_synphot_obsmodes_0004.rmap      743 bytes  (39 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_synphot_0070.imap              579 bytes  (40 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_xtractab_0250.rmap        815 bytes  (41 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_wcptab_0251.rmap          578 bytes  (42 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_teltab_0250.rmap          745 bytes  (43 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_tdstab_0254.rmap          921 bytes  (44 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_tdctab_0252.rmap          650 bytes  (45 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_srwtab_0250.rmap          745 bytes  (46 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_sptrctab_0251.rmap        895 bytes  (47 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_sdctab_0251.rmap          889 bytes  (48 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_riptab_0254.rmap          877 bytes  (49 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_phottab_0258.rmap       1.6 K bytes  (50 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_pfltfile_0250.rmap     23.7 K bytes  (51 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_pctab_0250.rmap         3.1 K bytes  (52 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_mofftab_0250.rmap         747 bytes  (53 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_mlintab_0250.rmap         601 bytes  (54 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_lfltfile_0250.rmap     11.8 K bytes  (55 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_lamptab_0250.rmap         610 bytes  (56 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_inangtab_0250.rmap        815 bytes  (57 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_imphttab_0252.rmap        616 bytes  (58 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_idctab_0251.rmap          775 bytes  (59 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_halotab_0250.rmap         747 bytes  (60 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_gactab_0250.rmap          651 bytes  (61 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_exstab_0250.rmap          745 bytes  (62 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_echsctab_0250.rmap        749 bytes  (63 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_disptab_0250.rmap         813 bytes  (64 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_darkfile_0354.rmap     59.9 K bytes  (65 / 142 files) (1.2 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_crrejtab_0250.rmap        711 bytes  (66 / 142 files) (1.3 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_cdstab_0250.rmap          745 bytes  (67 / 142 files) (1.3 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_ccdtab_0252.rmap          893 bytes  (68 / 142 files) (1.3 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_bpixtab_0250.rmap         845 bytes  (69 / 142 files) (1.3 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_biasfile_0356.rmap    119.9 K bytes  (70 / 142 files) (1.3 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_apertab_0250.rmap         588 bytes  (71 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_apdestab_0252.rmap        636 bytes  (72 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_stis_0370.imap               1.7 K bytes  (73 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_zprattab_0250.rmap      646 bytes  (74 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_tempfile_0250.rmap    1.1 K bytes  (75 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_tdffile_0250.rmap     8.9 K bytes  (76 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_saadfile_0250.rmap      771 bytes  (77 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_saacntab_0250.rmap      594 bytes  (78 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_rnlcortb_0250.rmap      771 bytes  (79 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_pmskfile_0250.rmap      603 bytes  (80 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_pmodfile_0250.rmap      603 bytes  (81 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_phottab_0250.rmap       862 bytes  (82 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_pedsbtab_0250.rmap      594 bytes  (83 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_noisfile_0250.rmap    2.6 K bytes  (84 / 142 files) (1.4 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_nlinfile_0250.rmap    1.7 K bytes  (85 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_maskfile_0250.rmap    1.2 K bytes  (86 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_illmfile_0250.rmap    5.8 K bytes  (87 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_idctab_0250.rmap        767 bytes  (88 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_flatfile_0250.rmap   11.0 K bytes  (89 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_darkfile_0250.rmap   14.9 K bytes  (90 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_nicmos_0250.imap             1.1 K bytes  (91 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_ywlkfile_0003.rmap         922 bytes  (92 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_xwlkfile_0002.rmap         922 bytes  (93 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_xtractab_0269.rmap       1.6 K bytes  (94 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_wcptab_0257.rmap         1.3 K bytes  (95 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_twozxtab_0277.rmap         990 bytes  (96 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_tracetab_0276.rmap         998 bytes  (97 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_tdstab_0271.rmap           803 bytes  (98 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_spwcstab_0255.rmap       1.1 K bytes  (99 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_spottab_0006.rmap          766 bytes  (100 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_proftab_0276.rmap        1.0 K bytes  (101 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_phatab_0250.rmap           668 bytes  (102 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_lamptab_0264.rmap        1.4 K bytes  (103 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_hvtab_0259.rmap            567 bytes  (104 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_hvdstab_0002.rmap        1.0 K bytes  (105 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_gsagtab_0261.rmap          712 bytes  (106 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_geofile_0250.rmap          670 bytes  (107 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_fluxtab_0282.rmap        1.7 K bytes  (108 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_flatfile_0264.rmap       1.8 K bytes  (109 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_disptab_0276.rmap        1.7 K bytes  (110 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_dgeofile_0002.rmap         909 bytes  (111 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_deadtab_0250.rmap          711 bytes  (112 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_brsttab_0250.rmap          696 bytes  (113 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_brftab_0250.rmap           614 bytes  (114 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_bpixtab_0260.rmap          773 bytes  (115 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_badttab_0252.rmap          643 bytes  (116 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_cos_0358.imap                1.4 K bytes  (117 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_spottab_0251.rmap          641 bytes  (118 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_snkcfile_0099.rmap       7.4 K bytes  (119 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_shadfile_0251.rmap         531 bytes  (120 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_satufile_0002.rmap       1.2 K bytes  (121 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_pfltfile_0253.rmap      69.2 K bytes  (122 / 142 files) (1.5 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_pctetab_0253.rmap          615 bytes  (123 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_oscntab_0251.rmap          781 bytes  (124 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_npolfile_0253.rmap       3.2 K bytes  (125 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_mlintab_0250.rmap          646 bytes  (126 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_mdriztab_0253.rmap         769 bytes  (127 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_imphttab_0260.rmap         769 bytes  (128 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_idctab_0256.rmap         1.5 K bytes  (129 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_flshfile_0268.rmap       3.4 K bytes  (130 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_drkcfile_0450.rmap      15.0 K bytes  (131 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_dgeofile_0250.rmap       3.2 K bytes  (132 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_darkfile_0441.rmap      86.9 K bytes  (133 / 142 files) (1.6 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_d2imfile_0253.rmap         601 bytes  (134 / 142 files) (1.7 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_crrejtab_0251.rmap         945 bytes  (135 / 142 files) (1.7 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_cfltfile_0250.rmap       1.2 K bytes  (136 / 142 files) (1.7 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_ccdtab_0256.rmap         1.4 K bytes  (137 / 142 files) (1.7 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_bpixtab_0252.rmap        1.0 K bytes  (138 / 142 files) (1.7 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_biasfile_0439.rmap      57.0 K bytes  (139 / 142 files) (1.7 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_atodtab_0251.rmap          528 bytes  (140 / 142 files) (1.8 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_acs_0540.imap                1.3 K bytes  (141 / 142 files) (1.8 M / 1.8 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/mappings/hst/hst_1186.pmap                      495 bytes  (142 / 142 files) (1.8 M / 1.8 M bytes)

CRDS - INFO -  No comparison context or source comparison requested.

CRDS - INFO -  ===> Processing j9l960adq_raw.fits

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/17717071j_osc.fits        17.3 K bytes  (1 / 13 files) (0 / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/25g1256nj_bpx.fits        23.0 K bytes  (2 / 13 files) (17.3 K / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/37g1550cj_mdz.fits       247.7 K bytes  (3 / 13 files) (40.3 K / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/4af1559ij_imp.fits       953.3 K bytes  (4 / 13 files) (288.0 K / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/4bb1536ej_npl.fits        51.8 K bytes  (5 / 13 files) (1.2 M / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/4bb1536oj_idc.fits       285.1 K bytes  (6 / 13 files) (1.3 M / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/4bb15371j_d2i.fits        51.8 K bytes  (7 / 13 files) (1.6 M / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/5331917aj_sat.fits       171.4 M bytes  (8 / 13 files) (1.6 M / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/66318264j_bia.fits       171.5 M bytes  (9 / 13 files) (173.1 M / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/72m1821ij_ccd.fits        43.2 K bytes  (10 / 13 files) (344.5 M / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/78f1759jj_drk.fits       268.5 M bytes  (11 / 13 files) (344.6 M / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/nar1136pj_pfl.fits       167.8 M bytes  (12 / 13 files) (613.1 M / 915.2 M bytes)

CRDS - INFO -  Fetching  ./crds_cache/references/hst/acs/qbu16424j_dxy.fits       134.3 M bytes  (13 / 13 files) (780.9 M / 915.2 M bytes)

CRDS - INFO -  0 errors
CRDS - INFO -  0 warnings
CRDS - INFO -  157 infos

CRDS - INFO -  No comparison context or source comparison requested.

CRDS - INFO -  ===> Processing j9l960afq_raw.fits

CRDS - INFO -  0 errors
CRDS - INFO -  0 warnings
CRDS - INFO -  2 infos

CRDS - INFO -  No comparison context or source comparison requested.

CRDS - INFO -  ===> Processing j9l960a9q_raw.fits

CRDS - INFO -  0 errors
CRDS - INFO -  0 warnings
CRDS - INFO -  2 infos

CRDS - INFO -  No comparison context or source comparison requested.

CRDS - INFO -  ===> Processing j9l960abq_raw.fits

CRDS - INFO -  0 errors
CRDS - INFO -  0 warnings
CRDS - INFO -  2 infos

CRDS - INFO -  No comparison context or source comparison requested.

CRDS - INFO -  ===> Processing j9l960a7q_raw.fits

CRDS - INFO -  0 errors
CRDS - INFO -  0 warnings
CRDS - INFO -  2 infos

Running calacs#

Finally, we can run calacs on the association file. It will produce *_flt.fits. The FLT files have had the default CCD calibration steps (bias subtraction, dark subtraction, flat field normalization) performed.

If the CTE correction is enabled...

  • …this next step will take a long time to complete. The CTE correction is computationally expensive and will use all of the cores on a machine by default. On an 8 core machine, CTE correcting a full-frame ACS/WFC image can take approximately 15 minutes per RAW file.

  • …*_flc.fits will also be produced. The FLC files are CTE-corrected but otherwise identical to the FLT files.

!calacs.e j9l960010_asn.fits

git tag: e0988181-dirty
git branch: HEAD
HEAD @: e098818105734475101120a544dfe468207bc690
Setting max threads to 4 out of 4 available


CALBEG*** CALACS -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:43 UTC


Input    j9l960010_asn.fits
LoadAsn:  Processing FULL Association
Trying to open j9l960010_asn.fits...
Read in Primary header from j9l960010_asn.fits...


CALBEG*** ACSCCD -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:43 UTC
Input    j9l960a7q_raw.fits
Output   j9l960a7q_blv_tmp.fits
Trying to open j9l960a7q_raw.fits...
Read in Primary header from j9l960a7q_raw.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC


CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  PERFORM
DQITAB   jref$25g1256nj_bpx.fits
DQITAB   PEDIGREE=INFLIGHT 30/03/2002 30/05/2002
DQITAB   DESCRIP =FITS reference table for bad pixel locations on ACS WFC

DQICORR  COMPLETE


BIASCORR PERFORM
BIASFILE jref$66318264j_bia.fits
BIASFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
BIASFILE DESCRIP =Standard full-frame bias for data taken after Mar 04 2006 08:00:00-

BIASCORR COMPLETE


BLEVCORR PERFORM
OSCNTAB  jref$17717071j_osc.fits
OSCNTAB  PEDIGREE=GROUND
OSCNTAB  DESCRIP =New OSCNTAB which includes entries for all subarrays.--------------
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 0 bias values from fit.
Computed a fit with slope of -0.000106303 and intercept of 4590.19
(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6

(blevcorr) Rejected 6 bias values from fit.
Computed a fit with slope of 0.000173842 and intercept of 4499.48
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4544.83 electrons.
     bias level of 4590.19 electrons was subtracted for AMP C.
     bias level of 4499.48 electrons was subtracted for AMP D.
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 6 bias values from fit.
Computed a fit with slope of -0.00016778 and intercept of 4534.42
(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 6 bias values from fit.
Computed a fit with slope of -7.68968e-05 and intercept of 4529.01
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4531.71 electrons.
     bias level of 4534.41 electrons was subtracted for AMP A.
     bias level of 4529.01 electrons was subtracted for AMP B.
BLEVCORR COMPLETE
Full Frame adjusted Darktime: 6.207202

DARKTIME from SCI header: 6.207202  Offset from CCDTAB: 0.000000  Final DARKTIME: 6.207202

Full-well saturation flagging being performed for imset 1.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.


Full-well saturation flagging being performed for imset 2.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.

    Uncertainty array initialized,
    readnoise =5.33,4.99,5.51,5.16
    gain =2.002,1.945,2.028,1.994
   default bias levels =4535.7,4535.7,4590.2,4498.9


SINKCORR OMIT

End      04-Oct-2024 20:09:44 UTC


*** ACSCCD complete ***


CALBEG*** ACS2D -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:44 UTC
Input    j9l960a7q_blv_tmp.fits
Output   j9l960a7q_flt.fits
Trying to open j9l960a7q_blv_tmp.fits...
Read in Primary header from j9l960a7q_blv_tmp.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC


Imset 1  Begin 20:09:44 UTC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
DARKFILE jref$78f1759jj_drk.fits
DARKFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
DARKFILE DESCRIP =Standard full-frame dark for data taken after Mar 04 2006 08:00:00-
Darktime from header 6.207202

Mean of dark image (MEANDARK) = 0.0387592
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM
PFLTFILE jref$nar1136pj_pfl.fits
PFLTFILE PEDIGREE=InFlight 18/04/2002 - 09/05/2002
PFLTFILE DESCRIP =F606W step +1 flat w/ mote shifted to  0 step

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.0711 as parnames[0]
==> Value of PHOTFLAM = 7.7916653e-20
==> Value of PHOTPLAM = 5919.7118
==> Value of PHOTBW = 672.44856
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 1  End 20:09:44 UTC


Imset 2  Begin 20:09:44 UTC


CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
Darktime from header 6.207202

Mean of dark image (MEANDARK) = 0.0417828
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.0711 as parnames[0]
==> Value of PHOTFLAM = 7.7916653e-20
==> Value of PHOTPLAM = 5919.7118
==> Value of PHOTBW = 672.44856
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 2  End 20:09:44 UTC


End      04-Oct-2024 20:09:44 UTC


*** ACS2D complete ***

CALBEG*** ACSCCD -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:44 UTC
Input    j9l960a9q_raw.fits
Output   j9l960a9q_blv_tmp.fits
Trying to open j9l960a9q_raw.fits...
Read in Primary header from j9l960a9q_raw.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC


CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  PERFORM
DQITAB   jref$25g1256nj_bpx.fits
DQITAB   PEDIGREE=INFLIGHT 30/03/2002 30/05/2002
DQITAB   DESCRIP =FITS reference table for bad pixel locations on ACS WFC

DQICORR  COMPLETE


BIASCORR PERFORM
BIASFILE jref$66318264j_bia.fits
BIASFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
BIASFILE DESCRIP =Standard full-frame bias for data taken after Mar 04 2006 08:00:00-

BIASCORR COMPLETE

BLEVCORR PERFORM
OSCNTAB  jref$17717071j_osc.fits
OSCNTAB  PEDIGREE=GROUND
OSCNTAB  DESCRIP =New OSCNTAB which includes entries for all subarrays.--------------
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 8 bias values from fit.
Computed a fit with slope of 0.000924487 and intercept of 4594.21
(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 2 bias values from fit.
Computed a fit with slope of 0.000724414 and intercept of 4501.93
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4548.07 electrons.
     bias level of 4594.21 electrons was subtracted for AMP C.
     bias level of 4501.93 electrons was subtracted for AMP D.
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 3 bias values from fit.
Computed a fit with slope of -0.00129211 and intercept of 4536.16
(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 7 bias values from fit.
Computed a fit with slope of -0.00117196 and intercept of 4537.08
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4536.6 electrons.
     bias level of 4536.13 electrons was subtracted for AMP A.
     bias level of 4537.06 electrons was subtracted for AMP B.
BLEVCORR COMPLETE
Full Frame adjusted Darktime: 53.111202

DARKTIME from SCI header: 53.111202  Offset from CCDTAB: 0.000000  Final DARKTIME: 53.111202

Full-well saturation flagging being performed for imset 1.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.


Full-well saturation flagging being performed for imset 2.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.

    Uncertainty array initialized,
    readnoise =5.33,4.99,5.51,5.16
    gain =2.002,1.945,2.028,1.994
   default bias levels =4535.7,4535.7,4590.2,4498.9


SINKCORR OMIT

End      04-Oct-2024 20:09:45 UTC


*** ACSCCD complete ***


CALBEG*** ACS2D -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:45 UTC
Input    j9l960a9q_blv_tmp.fits
Output   j9l960a9q_flt.fits
Trying to open j9l960a9q_blv_tmp.fits...
Read in Primary header from j9l960a9q_blv_tmp.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC


Imset 1  Begin 20:09:45 UTC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
DARKFILE jref$78f1759jj_drk.fits
DARKFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
DARKFILE DESCRIP =Standard full-frame dark for data taken after Mar 04 2006 08:00:00-
Darktime from header 53.111202

Mean of dark image (MEANDARK) = 0.331638
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM
PFLTFILE jref$nar1136pj_pfl.fits
PFLTFILE PEDIGREE=InFlight 18/04/2002 - 09/05/2002
PFLTFILE DESCRIP =F606W step +1 flat w/ mote shifted to  0 step

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.0777 as parnames[0]
==> Value of PHOTFLAM = 7.7916655e-20
==> Value of PHOTPLAM = 5919.7118
==> Value of PHOTBW = 672.44856
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 1  End 20:09:45 UTC


Imset 2  Begin 20:09:45 UTC


CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
Darktime from header 53.111202

Mean of dark image (MEANDARK) = 0.35751
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.0777 as parnames[0]
==> Value of PHOTFLAM = 7.7916655e-20
==> Value of PHOTPLAM = 5919.7118
==> Value of PHOTBW = 672.44856
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 2  End 20:09:45 UTC


End      04-Oct-2024 20:09:45 UTC


*** ACS2D complete ***

CALBEG*** ACSCCD -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:45 UTC
Input    j9l960abq_raw.fits
Output   j9l960abq_blv_tmp.fits
Trying to open j9l960abq_raw.fits...
Read in Primary header from j9l960abq_raw.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC


CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  PERFORM
DQITAB   jref$25g1256nj_bpx.fits
DQITAB   PEDIGREE=INFLIGHT 30/03/2002 30/05/2002
DQITAB   DESCRIP =FITS reference table for bad pixel locations on ACS WFC

DQICORR  COMPLETE


BIASCORR PERFORM
BIASFILE jref$66318264j_bia.fits
BIASFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
BIASFILE DESCRIP =Standard full-frame bias for data taken after Mar 04 2006 08:00:00-

BIASCORR COMPLETE


BLEVCORR PERFORM
OSCNTAB  jref$17717071j_osc.fits
OSCNTAB  PEDIGREE=GROUND
OSCNTAB  DESCRIP =New OSCNTAB which includes entries for all subarrays.--------------
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 6 bias values from fit.
Computed a fit with slope of 0.000973207 and intercept of 4591.88

(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 6 bias values from fit.
Computed a fit with slope of 0.000842876 and intercept of 4501.45
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4546.67 electrons.
     bias level of 4591.88 electrons was subtracted for AMP C.
     bias level of 4501.45 electrons was subtracted for AMP D.
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 8 bias values from fit.
Computed a fit with slope of -0.00109461 and intercept of 4535.91
(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 12 bias values from fit.
Computed a fit with slope of -0.00126726 and intercept of 4541.44
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4538.65 electrons.
     bias level of 4535.89 electrons was subtracted for AMP A.
     bias level of 4541.41 electrons was subtracted for AMP B.
BLEVCORR COMPLETE
Full Frame adjusted Darktime: 53.215202

DARKTIME from SCI header: 53.215202  Offset from CCDTAB: 0.000000  Final DARKTIME: 53.215202

Full-well saturation flagging being performed for imset 1.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.


Full-well saturation flagging being performed for imset 2.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.

    Uncertainty array initialized,
    readnoise =5.33,4.99,5.51,5.16
    gain =2.002,1.945,2.028,1.994
   default bias levels =4535.7,4535.7,4590.2,4498.9


SINKCORR OMIT

End      04-Oct-2024 20:09:46 UTC


*** ACSCCD complete ***


CALBEG*** ACS2D -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:46 UTC
Input    j9l960abq_blv_tmp.fits
Output   j9l960abq_flt.fits
Trying to open j9l960abq_blv_tmp.fits...
Read in Primary header from j9l960abq_blv_tmp.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC


Imset 1  Begin 20:09:46 UTC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
DARKFILE jref$78f1759jj_drk.fits
DARKFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
DARKFILE DESCRIP =Standard full-frame dark for data taken after Mar 04 2006 08:00:00-
Darktime from header 53.215202

Mean of dark image (MEANDARK) = 0.332288
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM
PFLTFILE jref$nar1136pj_pfl.fits
PFLTFILE PEDIGREE=InFlight 18/04/2002 - 09/05/2002
PFLTFILE DESCRIP =F606W step +1 flat w/ mote shifted to  0 step

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.0852 as parnames[0]
==> Value of PHOTFLAM = 7.7916658e-20
==> Value of PHOTPLAM = 5919.7118
==> Value of PHOTBW = 672.44856
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 1  End 20:09:46 UTC


Imset 2  Begin 20:09:46 UTC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
Darktime from header 53.215202

Mean of dark image (MEANDARK) = 0.35821
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.0852 as parnames[0]
==> Value of PHOTFLAM = 7.7916658e-20
==> Value of PHOTPLAM = 5919.7118
==> Value of PHOTBW = 672.44856
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 2  End 20:09:47 UTC


End      04-Oct-2024 20:09:47 UTC


*** ACS2D complete ***


CALBEG*** ACSCCD -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:47 UTC
Input    j9l960adq_raw.fits
Output   j9l960adq_blv_tmp.fits
Trying to open j9l960adq_raw.fits...
Read in Primary header from j9l960adq_raw.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  PERFORM
DQITAB   jref$25g1256nj_bpx.fits
DQITAB   PEDIGREE=INFLIGHT 30/03/2002 30/05/2002
DQITAB   DESCRIP =FITS reference table for bad pixel locations on ACS WFC
DQICORR  COMPLETE


BIASCORR PERFORM
BIASFILE jref$66318264j_bia.fits
BIASFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
BIASFILE DESCRIP =Standard full-frame bias for data taken after Mar 04 2006 08:00:00-

BIASCORR COMPLETE


BLEVCORR PERFORM
OSCNTAB  jref$17717071j_osc.fits
OSCNTAB  PEDIGREE=GROUND
OSCNTAB  DESCRIP =New OSCNTAB which includes entries for all subarrays.--------------
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 2 bias values from fit.
Computed a fit with slope of 0.000849334 and intercept of 4589.62
(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 6 bias values from fit.
Computed a fit with slope of 0.0010047 and intercept of 4499.15
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4544.38 electrons.
     bias level of 4589.62 electrons was subtracted for AMP C.
     bias level of 4499.15 electrons was subtracted for AMP D.
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 7 bias values from fit.
Computed a fit with slope of -0.000791752 and intercept of 4534.82

(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 8 bias values from fit.
Computed a fit with slope of -0.00135253 and intercept of 4531.18
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4532.98 electrons.
     bias level of 4534.81 electrons was subtracted for AMP A.
     bias level of 4531.15 electrons was subtracted for AMP B.
BLEVCORR COMPLETE
Full Frame adjusted Darktime: 53.111202

DARKTIME from SCI header: 53.111202  Offset from CCDTAB: 0.000000  Final DARKTIME: 53.111202

Full-well saturation flagging being performed for imset 1.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.


Full-well saturation flagging being performed for imset 2.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.

    Uncertainty array initialized,
    readnoise =5.33,4.99,5.51,5.16
    gain =2.002,1.945,2.028,1.994
   default bias levels =4535.7,4535.7,4590.2,4498.9


SINKCORR OMIT

End      04-Oct-2024 20:09:47 UTC


*** ACSCCD complete ***


CALBEG*** ACS2D -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:47 UTC
Input    j9l960adq_blv_tmp.fits
Output   j9l960adq_flt.fits
Trying to open j9l960adq_blv_tmp.fits...
Read in Primary header from j9l960adq_blv_tmp.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC


Imset 1  Begin 20:09:47 UTC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
DARKFILE jref$78f1759jj_drk.fits
DARKFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
DARKFILE DESCRIP =Standard full-frame dark for data taken after Mar 04 2006 08:00:00-
Darktime from header 53.111202

Mean of dark image (MEANDARK) = 0.331638
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM
PFLTFILE jref$nar1136pj_pfl.fits
PFLTFILE PEDIGREE=InFlight 18/04/2002 - 09/05/2002
PFLTFILE DESCRIP =F606W step +1 flat w/ mote shifted to  0 step

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.0927 as parnames[0]
==> Value of PHOTFLAM = 7.7916661e-20
==> Value of PHOTPLAM = 5919.7117
==> Value of PHOTBW = 672.44856
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 1  End 20:09:47 UTC


Imset 2  Begin 20:09:47 UTC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
Darktime from header 53.111202

Mean of dark image (MEANDARK) = 0.35751
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.0927 as parnames[0]
==> Value of PHOTFLAM = 7.7916661e-20
==> Value of PHOTPLAM = 5919.7117
==> Value of PHOTBW = 672.44856
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 2  End 20:09:48 UTC


End      04-Oct-2024 20:09:48 UTC


*** ACS2D complete ***


CALBEG*** ACSCCD -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:48 UTC
Input    j9l960afq_raw.fits
Output   j9l960afq_blv_tmp.fits
Trying to open j9l960afq_raw.fits...
Read in Primary header from j9l960afq_raw.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  PERFORM
DQITAB   jref$25g1256nj_bpx.fits
DQITAB   PEDIGREE=INFLIGHT 30/03/2002 30/05/2002
DQITAB   DESCRIP =FITS reference table for bad pixel locations on ACS WFC
DQICORR  COMPLETE


BIASCORR PERFORM
BIASFILE jref$66318264j_bia.fits
BIASFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
BIASFILE DESCRIP =Standard full-frame bias for data taken after Mar 04 2006 08:00:00-

BIASCORR COMPLETE


BLEVCORR PERFORM
OSCNTAB  jref$17717071j_osc.fits
OSCNTAB  PEDIGREE=GROUND
OSCNTAB  DESCRIP =New OSCNTAB which includes entries for all subarrays.--------------
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 9 bias values from fit.
Computed a fit with slope of 0.000797414 and intercept of 4593.56
(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 5 bias values from fit.
Computed a fit with slope of 0.00102424 and intercept of 4503.86
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4548.71 electrons.
     bias level of 4593.56 electrons was subtracted for AMP C.
     bias level of 4503.86 electrons was subtracted for AMP D.
(blevcorr) No virtual overscan region specified.
(blevcorr) Bias drift correction will not be applied.
(FitToOverscan) biassecta=(18,23) biassectb=(0,0) npix=6
(blevcorr) Rejected 5 bias values from fit.
Computed a fit with slope of -0.000581494 and intercept of 4536.33
(FitToOverscan) biassecta=(4120,4125) biassectb=(0,0) npix=6
(blevcorr) Rejected 2 bias values from fit.
Computed a fit with slope of -0.00100084 and intercept of 4534.36
Bias level from overscan has been subtracted;
     mean of bias levels subtracted was 4535.33 electrons.
     bias level of 4536.32 electrons was subtracted for AMP A.
     bias level of 4534.34 electrons was subtracted for AMP B.
BLEVCORR COMPLETE
Full Frame adjusted Darktime: 53.247204

DARKTIME from SCI header: 53.247204  Offset from CCDTAB: 0.000000  Final DARKTIME: 53.247204

Full-well saturation flagging being performed for imset 1.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.


Full-well saturation flagging being performed for imset 2.

Full-frame full-well saturation image flagging step being performed.

Full-frame full-well saturation image flagging step done.

    Uncertainty array initialized,
    readnoise =5.33,4.99,5.51,5.16
    gain =2.002,1.945,2.028,1.994
   default bias levels =4535.7,4535.7,4590.2,4498.9


SINKCORR OMIT

End      04-Oct-2024 20:09:48 UTC


*** ACSCCD complete ***


CALBEG*** ACS2D -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:48 UTC
Input    j9l960afq_blv_tmp.fits
Output   j9l960afq_flt.fits
Trying to open j9l960afq_blv_tmp.fits...
Read in Primary header from j9l960afq_blv_tmp.fits...
APERTURE WFCENTER
FILTER1 F606W
FILTER2 CLEAR2L
DETECTOR WFC


Imset 1  Begin 20:09:48 UTC


CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
DARKFILE jref$78f1759jj_drk.fits
DARKFILE PEDIGREE=INFLIGHT 05/03/2006 24/03/2006
DARKFILE DESCRIP =Standard full-frame dark for data taken after Mar 04 2006 08:00:00-
Darktime from header 53.247204

Mean of dark image (MEANDARK) = 0.332488
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM
PFLTFILE jref$nar1136pj_pfl.fits
PFLTFILE PEDIGREE=InFlight 18/04/2002 - 09/05/2002
PFLTFILE DESCRIP =F606W step +1 flat w/ mote shifted to  0 step

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.1387 as parnames[0]
==> Value of PHOTFLAM = 7.791668e-20
==> Value of PHOTPLAM = 5919.7117
==> Value of PHOTBW = 672.44855
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 1  End 20:09:48 UTC


Imset 2  Begin 20:09:48 UTC

CCDTAB   jref$72m1821ij_ccd.fits
CCDTAB   PEDIGREE=inflight
CCDTAB   DESCRIP =CCD table
CCDTAB   DESCRIP =June 2002


DQICORR  OMIT


DARKCORR PERFORM
Darktime from header 53.247204

Mean of dark image (MEANDARK) = 0.358425
DARKCORR COMPLETE


FLSHCORR OMIT


FLATCORR PERFORM

FLATCORR COMPLETE


SHADCORR OMIT


PHOTCORR PERFORM
Found parameterized variable 1.
NUMPAR=1, N=1
Allocated 1 parnames
Adding parameter mjd#53807.1387 as parnames[0]
==> Value of PHOTFLAM = 7.791668e-20
==> Value of PHOTPLAM = 5919.7117
==> Value of PHOTBW = 672.44855
IMPHTTAB jref$4af1559ij_imp.fits
IMPHTTAB PEDIGREE=INFLIGHT 18/04/2000 29/09/2020
IMPHTTAB DESCRIP =photometry keywords reference file---------------------------------
PHOTCORR COMPLETE

Imset 2  End 20:09:49 UTC


End      04-Oct-2024 20:09:49 UTC


*** ACS2D complete ***

Finished CCD processing...


CALBEG*** ACSDTH -- Version 10.3.5 (08-Feb-2022) ***
Begin    04-Oct-2024 20:09:49 UTC
The task PyDrizzle needs to be run in order to generate
a geometrically corrected, drizzle-combined product.
PyDrizzle requires PyRAF. See pyraf.stsci.edu for more details.
Warning    Output file `j9l960010_spt.fits' already exists.
ERROR:    CALACS processing NOT completed for j9l960010_asn.fits
ERROR:    CALACS processing NOT completed for j9l960010_asn.fits
ERROR:             status = 1021

Selecting an image to plot, depending on whether or not you enabled CTE correction earlier.

if cte_correct:
    fl_fits = 'j9l960a7q_flc.fits'
else:
    fl_fits = 'j9l960a7q_flt.fits'

Plotting results#

As a check of our calibrated products, we will plot a subsection of one of the input images.

raw_image = fits.getdata('j9l960a7q_raw.fits')
cal_image = fits.getdata(fl_fits)

plot.calib_compare_plot(raw_image, cal_image)
../../../_images/bcb84a608587405287223076f69e82742b99699905cc9c40216ad5195cf602e4.png

Comparing the FLT calibrated image to the RAW uncalibrated one, we can see that image artifacts have been removed. Most noticeably, hot columns in the bias have been subtracted.

if cte_correct:
    img_files = 'j9l9*a[9-f]q_flc.fits'
else:
    img_files = 'j9l9*a[9-f]q_flt.fits'

updatewcs.updatewcs(img_files, use_db=False)

Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 444 for chip 2 : F606W
Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 444 for chip 2 : F606W
Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 443 for chip 1 : F606W

Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 444 for chip 2 : F606W
Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 444 for chip 2 : F606W

Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 443 for chip 1 : F606W

Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 444 for chip 2 : F606W
Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 444 for chip 2 : F606W
Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 443 for chip 1 : F606W

Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 444 for chip 2 : F606W
Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 444 for chip 2 : F606W
Using 2015-calibrated VAFACTOR-corrected TDD correction...
- IDCTAB: Distortion model from row 443 for chip 1 : F606W

['j9l960afq_flt.fits',
 'j9l960abq_flt.fits',
 'j9l960a9q_flt.fits',
 'j9l960adq_flt.fits']

Conclusion#

The FLT and FLC images are not yet suitable for photometry. Before performing any analysis on the images, we still need to remove detector artifacts, cosmic rays, and geometric distortion. AstroDrizzle can do all of these steps and produce a single mosaic image that incorporates all of the individual exposures.

Users who do not use astrodrizzle to correct data for distortion will need to apply a pixel area map to their data to correct for the distorted pixel area projected onto the sky before performing photometry. For those who would like to learn how to create a pixel area map, a Jupyter Notebook on the subject can be found here.

For more help:#

More details may be found on the ACS website and in the ACS Instrument and Data Handbooks.

Please visit the HST Help Desk. Through the help desk portal, you can explore the HST Knowledge Base and request additional help from experts.

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