PDS_VERSION_ID        = PDS3
RECORD_TYPE           = "STREAM"

OBJECT                = TEXT
  PUBLICATION_DATE    = 2022-12-01
  NOTE                = "Description of the CALIB directory"
END_OBJECT            = TEXT
END

CALIB Directory Content

The CALIB folder contains the calibration database used by OsiCalliope to 
generate the calibrated images. All information is readable using either a text
editor (ascii format) or a standard PDS data file reader.

The CALIB folder has the following structure:

   CALIB --|-- ABSCAL               : Folder containing the DN/s to W/m^2/sr/nm
           |                          conversion factors to radiometric 
           |                          calibrate the images.
           |
           |-- BADPIXELS            : Folder containing a list of bad pixels on
           |                          the CCDs and their correction method.
           |
           |-- BIAS                 : Folder containing the bias offsets for 
           |                          the various operational modes of OSIRIS
           |
           |-- DISTORTION           : Folder containing the geometric 
           |                          distorsion and boresight correction 
           |                          parameters for the cameras 
           |                          
           |-- EXPOSURE             : Folder containing data for exposure
           |                          time correction
           |
           |-- FILTERS              : Folder containing the transmission curves
           |                          of the NAC and WAC filters.
           |
           |-- FLATFIELDS           : Folder containing the flatfields for
           |                          the various filter combinations
           |
           |-- GEO                  : Folder containing shift values to 
           |                          optimise the alignment of GEOSPICE data
           |      
           |-- GHOST                : Folder containing the in-field stray- 
           |                          light kernels for the various filter 
           |                          combinations
           |
           |-- SOLARSTR             : Folder containing the solar stray-light 
           |                          patterns
           |
           |-- THROUGHPUT           : Folder containing the the parameters used 
           |                          for the determination of the camera
           |                          throughput
           |
           |-- OSICALLIOPE_V??.TXT  : Configuration file used by OsiCalliope
                                      with general calibration and
                                      configuration parameters and a list of
                                      files and versions used by OsiCalliope.


The description of the file name convention of these files can be found in the
EAICD under ./DOCUMENT/EAICD. The content of the files is described in the
calibration documents under ./DOCUMENT/CALIB.