PDS_VERSION_ID        = PDS3                                                  
LABEL_REVISION_NOTE   = "Sat Jan 25 19:55:36 2014 <UTC>, CSee"             
DD_VERSION_ID         = PDSCAT1R90

RECORD_TYPE           = STREAM                                                
                                                                              
OBJECT                = TEXT                                                  
  INTERCHANGE_FORMAT  = ASCII                                                 
  PUBLICATION_DATE    = 2003-13-07                                            
  NOTE                = "Description of contents in the DOCUMENT              
                         subdirectory."                                       
END_OBJECT            = TEXT                                                  
END                                                                           
                                                                              

There are 4 main components to the document section:  

1) DOCINFO.TXT - This document
2) Bibliography directory, contains a compilation of relevant references. 
3) DISR Calibration Documents, is critical and is expounded upon below.  
4) DISR Supporting Documents directory contains Guides, Manuals and background 
   information (also outlined below).
  

The Calibration Documents are subdivided into 9 major categories, one for each 
of the eight DISR sub-instruents:  1) Imagers, 2) Infrared Spectrometers, 
3) Side Looking Imager Strips, 4) Solar Aureole Cameras, 5) Sun Sensor, 
6) Surface Science Lamp, 7) Violet Photometers and, 8) Visible Spectrometers; 
plus a directory for the calibration standard documentation.  Thus, for 
example, the three imagers of varying resolution and look angle (namely the 
HRI, MRI and SLI) are explored in detail in the imager Calibration Report. 

All information necessary to reduce the data are included within the 
approporiate calibration report.
  
The following table lists the instruments included in each calibration report:

1) Images:                All three imaging cameras, namely the HRI, MRI and 
                            SLI.    
2) Infrared:              Both up and down looking infrared spectorometers, 
                            namely ULIS and DLIS.                  
3) Solar Aureole:         All four channels of the solar aureole camera.
4) Sun Sensor:            Information relating to the Sun Sensor instrument.
5) Surface Science Lamp:  Information relating to the Surface Science Lamp 
                            illumination system.
6) Violet:                Both the up and down looking violet photometers, 
                            namely the ULV and DLV.
7) Violet Flux:           The Flux for the violet photometer system, both 
                            for the ULV and DLV.
8) Visible:               Both the up and down looking visible spectrometers, 
                            namely the ULVS and DLVS.

In addition to the 8 calibration reports, there is a final category of 
calibration documents called the calibration standard.  This last category 
is further subdivided into the cal standard review, integrating sphere 
homogeneity and dark current.  

9) Calibration Standard...
     CALIBRATION_STANDARD_REVIEW     : Information about the lamps used for 
                                         the labratory calibration.
     INTEGRATING_SPHERE_HOMOGENEITY  : Information about the Integrating Sphere 
                                         used for the labratory calibration.
     DARK_CURRENT                    : Documents the procedure for determining 
                                         the CCD dark current for a given 
                                         dataset.


The DISR_SUPPORTING_DOCUMENTS directory contains guides, manuals and other 
background information about the instrument, mission and data volume.  The 
six subdirectories contain:

1) The DISR Archive Data Users' Guide which provides information about
   interperting the archived data.
2) The Experimenter to Archive Interface Control Document (EAICD) which 
   describes the data volume and how it was archived.  
3) Experiment User's Manual, describes detailed information about the use 
   of the DISR instrument.  
4) The DISR dataset header description document, which provides information 
   about the header fields associated with each data file.  
5) Excerpts from ESA publication SP-1177 (August 1997) describing the intended 
   mission, instrument, and anticipated sunlight penetration model.
6) The Space Science Revew paper from 1999, which describes the DISR 
   instrument and mission.