PDS_VERSION_ID                = PDS3
RECORD_TYPE                   = STREAM
OBJECT                        = TEXT
  PUBLICATION_DATE            = 2019-07-07
  NOTE                        = "Description of the data directory 
                                 contents for the Cassini Imaging Science
                                 Subsystem EDR archive"
END_OBJECT                    = TEXT
END
 
 
                   DATA Directory Contents

The data directory on the CALIBRATION archive volume contains a set of
sample images that have been calibrated using the Cassini ISS calibration
(CISSCAL) sofware. The images have been chosen to represent a range of 
different targets, camera settings and data qualities. Currently, the 
sample calibrated images are:

IMAGE NAME      FILTERS   SUM   CONV    CAM      COMP      A/B  TARGET
----------------------------------------------------------------------------
N1465676754_2   CL1/CL2   FULL  12BIT   NACONLY  LOSSLESS  ON   Phoebe
W1471312563_1   CL1/CL2   FULL  12BIT   BOTSIM   LOSSLESS  OFF  Dark
W1477592960_1   CL1/IR1   FULL  12BIT   WACONLY  LOSSLESS  ON   Rings
N1523990676_1   P0/CB2    SUM4  12BIT   NACONLY  LOSSLESS  OFF  Saturn
N1523990693_1   P60/CB2   SUM4  12BIT   NACONLY  LOSSLESS  OFF  Saturn
N1523990710_1   P120/CB2  SUM4  12BIT   NACONLY  LOSSLESS  OFF  Saturn
N1598087203_1   UV2/UV3   FULL  8LSB    NACONLY  LOSSLESS  OFF  Tethys
W1658424923_1   MT3/IRP90 FULL  12BIT   WACONLY  NOTCOMP   OFF  Saturn
N1660468980_1   CL1/CL2   FULL  TABLE   NACONLY  LOSSY     OFF  Tethys
W1788966301_1   MT2/IRP90 SUM2  12BIT   WACONLY  LOSSLESS  OFF  Saturn/Rings
W1788966325_1   MT2/IRP0  SUM2  12BIT   WACONLY  LOSSLESS  OFF  Saturn/Rings
W1800176826_1   CB2/CL2   FULL  TABLE   WACONLY  LOSSLESS  OFF  Saturn

For each image listed above, calibrated images are provided for each step 
in the calibration pipeline. Filenames are of the form *CAL_<subscript>.IMG, 
where the subscripts correspond to the various calibration steps as follows:

STEP  SUBSCRIPT   DESCRIPTION
--------------------------------------------------------
01)   LUT         Lookup table correction
02)   BITW        Bitweight correction
03)   BIAS        Subtract bias/remove 2 Hz noise
04)   DARK        Subtract dark
05)   ABPP        Remove anti-blooming mode pixel pairs
06)   LIN         Linearize
07)   FLAT        Flatfield correction
08)   IOF/EPS     Convert to flux (I/F or electrons/sec)
09)   CORR        Apply absolute flux correction factors
10)   GEOM        Geometric correction

Corresponding raw image files are also included for comparison purposes.

Note that all final calibrated images have units of I/F, with the exception 
of the shutter-inhibited "dark" image (W1471312563_1), which is calibrated 
to electrons/sec, and for which flatfield correction, absolute flux 
correction and geometric correction do not apply. Thus the <EPS> version of 
that image is the final, fully-calibrated version, whereas for all other 
images, the <GEOM> version is the final, fully-calbrated form. The 
calibration settings used for each image have been written to that image's 
VICAR label. Saturated and missing pixels have been set to NaN.