PDS_VERSION_ID              = PDS3
RECORD_TYPE                 = STREAM
OBJECT                      = TEXT
  PUBLICATION_DATE          = 2004-08-13
  NOTE                      = "Description of the index directory contents."
END_OBJECT                  = TEXT
END



                    INDEX Directory Contents

The index directory contains tabular index files, accompanied by detached 
PDS labels, intended for use in data management systems.  The following files 
are found in this directory.

indxinfo.txt -    The file you are reading.

index.lbl    -    Detached PDS label for index.tab.

index.tab    -    Index table for the current Cassini Imaging Science
                  Subsystem Raw EDR volume.



              Notes on Using the Image Index 

The index table in this directory contains one row (record) for 
each image on this Cassini Imaging Science Subsystem Raw EDR 
volume.  

The columns in this table are keywords related to each image.  These
keywords include all of the detached label keywords such as 

  TARGET_NAME
  FILTER_NAME
  START_TIME
  OBSERVATION_ID
  etc.  

Also included are many calculated geometrical keywords such as:
  
  TARGET_DISTANCE
  TARGET_LIST,
  CENTER_LONGITUDE
  INCIDENCE_ANGLE
  PIXEL_SCALE
  etc.

The table is formatted so that it can be read directly into many database 
systems.  All fields are separated by commas, and character fields are 
enclosed in double quotation marks ("). Character fields are left justified 
and numeric fields are right justified.  

Each record ends with ASCII carriage return and line feed characters.  This 
allows the table to be treated as a fixed length record file on computers 
that support this file type and as a normal text file on other computers.

The index.lbl file is a PDS label file that describes the content and 
structure of the fields in the index table, including field name, format, 
and description.  

The values for start byte and number of bytes listed in the label file do 
not include commas between fields or quotation marks surrounding character 
fields.

Please note that the geometrical keywords are calculated using the
project-provided reconstructed SPICE kernels.  In some cases, an 
auto-navigated c-kernel is used in place of the ACS reconstructed
c-kernel.  Please read the section entitled "ISS Auto-navigation" in
the dataset file of the catalog directory for more information on the
use and accuracy of this data.
