Space Telescope Science Institute
ACS Data Handbook V7.1
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Index

A
ACS channels
ACS electronics failure Jan. 2007
acscte
analog-to-digital (A-to-D) conversion
aperture correction
apertures
HRC and WFC in V2/V3 frame
WFC in V2/V3 frame
Archive
association tables
AstroDrizzle
astrometry
absolute
ACS coordinate transformations
impact of guide star failures
relative
aXe 1, 2
B
bad pixels data quality flags
bias jumps
bias subtraction
C
calacs 1, 2
acs2d 1, 2
acsccd 1, 2, 3
acscte
acscte (pixel-based CTE correction)
acsrej (cosmic ray rejection task)
acssum
calibration steps
calibration switch selection criteria
doBias (bias image subtraction)
doBlev (bias level correction, overscan subtraction)
doDark (dark image subtraction)
doDQI (bad pixel determination) 1, 2
doFlash (post-flash subtraction)
doFlat (flat field image correction)
doNoise (error array initialization) 1, 2
doNonLin (linearity correction, MAMA data)
doPhot (photometry keywords calculation)
doShad (shutter shading correction)
doStat (image statistics determination)
post-SM4 processing
processing and combining sub-exposures
processing dithered exposures
processing single exposures
product file suffixes
toElectrons (unit conversion from DN to electrons)
trailer files
calibration
A-to-D errors
bias errors
calacs
CTE corrections
flat fields
gain
intermediate products
manual recalibration
photometry
polarimetry 1, 2
ramp filters
read noise
shading correction
spectroscopy
Calibration Database System (CDBS)
CCD
bias jumps
CTE
full well depth
hot and warm pixels
hot columns
HRC bias level determination
linearity
linearity beyond saturation
post-SM4 WFC bias gradient
post-SM4 WFC bias striping
post-SM4 WFC signal-dependent bias shift
post-SM4 WFC sub-array bias gradient
quantizing noise
read noise
saturation
sub-arrays
WFC bias level determination
charge diffusion
charge transfer efficiency (CTE)
acscte
charge diffusion
internal measurements
coronagraphy
flat fields
ghosts
photometry
PSF subtraction
cosmic ray rejection
cosmic rays
D
dark current
features
increasing rate
reference file (DARKFILE)
data
array size (pixels)
associations
file definitions
file size (MB)
files and suffixes
FITS file structure
multi-extension FITS
storage and transfer
storage requirements
trailer files
units for calacs images
units for calibrated data
units for drizzled data
units for raw data
Data Archive and Distribution System (DADS)
data quality
array initialization
bad pixel flags
detector
apertures in V2/V3 frame
characteristics
DrizzlePac
F
filter wheel position accuracy
FITS files
flat fields
CCD ground flats
CCD L-flats correction
coronagraphy
Earth flats
pipeline flats
pixel area map
polarimetry
SBC ground flats
SBC L-flats correction
flat-fielded images (flt.fits)
photometry
G
gain
calibration
Generic Conversion
geometric distortion
pixel area map
grism
guide star failures
H
hot pixels
annealing
growth
HRC
coronagraphic flats
coronagraphic photometry
coronagraphic PSF subtraction
CTE
Earth flats
linearity
linearity beyond saturation
ramp filters
red leak
UV contamination
UV PSF
HSTCAL
I
icons
used in this manual
image anomalies
cross-talk
dust motes
optical ghosts
scattered Earth light
scattered light (sources)
image header keywords
extension header keywords
group header keywords
primary header keywords
image units 1, 2, 3
AstroDrizzle 1, 2
calibrated data
M
MAMA linearity correction
O
observing strategies
On-The-Fly Reprocessing (OTFR) system
Operations Pipeline Unified System (OPUS)
optical design
P
parallel operations
performance after SM4
sub-array bias gradient
WFC bias gradient
WFC bias striping
WFC signal-dependent bias shift
photometry
ABMAG
aperture correction
bypassing PHOTCORR step during recalibration
color correction
coronagraphy
header keyword
photometric systems
pixel area map
red leaks
STMAG
UV contamination
VEGAMAG
zeropoints
pipeline
AstroDrizzle
Calibration Database System (CDBS)
Generic Conversion
On-The-Fly Reprocessing (OTFR)
Operations Pipeline Unified System (OPUS)
processing steps
pixel area map (PAM)
point spread function (PSF)
coronagraphic PSF subtraction
field dependence
long wavelength artifacts
Tiny Tim
UV
polarimetry
calibration 1, 2
diattenuation
flat field
geometric distortion
instrumental issues
phase retardance
zeropoint 1, 2
prism
R
ramp filters
apertures
ground calibration
recalibration
setting switches
skipping doPhot step
red leaks
HRC
SBC
reference files
bias image (BIASFILE)
calibration switches
CCD characteristics table (CCDTAB)
cosmic ray rejection table (CRREJTAB)
CTE-corrected dark image (DRKCFILE)
dark image (DARKFILE) 1, 2
flat field image (PFLTFILE, LFLTFILE, DFLTFILE, CFLTFILE)
header keywords
MAMA linearity table (MLINTAB)
overscan table (OSCNTAB)
parameters characterizing CTE (PCTETAB)
permanent bad pixels (BPIXTAB) 1, 2
post-flash image (FLSHFILE)
shutter shading image (SHADFILE)
total throughput lookup table (IMPHTTAB)
S
saturation
CCD linearity
SBC
dark count rate
red leaks
UV contamination
UV PSF
shutter stability
software
AstroDrizzle
calacs
DrizzlePac
HSTCAL
STScI_Python
South Atlantic Anomaly (SAA)
spectroscopy
AUTOIMAGE
background
bright stars
calibration
crowding
data reduction with aXe
dithering
extra field objects
flat-fielding
flux calibration
resolution
wavelength calibration
zeroth order
STScI_Python
T
target acquisitions
Tiny Tim
typographic conventions
in this manual 1, 2
U
units for images 1, 2
UV contamination
W
warm pixels
warning
types in this document
WFC
CTE
linearity
linearity beyond saturation
ramp filters
Z
zeropoints

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