CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL
RECORD_TYPE                    = STREAM
SPACECRAFT_NAME                = GALILEO_ORBITER
INSTRUMENT_NAME                = "NEAR_INFRARED_MAPPING_SPECTROMETER"
INSTRUMENT_ID                  = NIMS
OBJECT                         = TEXT
   NOTE                        = "Description of the INDEX directory on
                                 the NIMS EDR CD-ROM set"
   PUBLICATION_DATE            = 1995-03-15
END_OBJECT                     = TEXT
END

The INDEX directory contains various tables summarizing the data in the
EDRs on this CDROM, and pointing to various ancillary files.  Each table
is accompanied by a detached PDS label with the same name and a .LBL
extension, which contains a complete description of the structure of the
table. Section 6, "Index Files" of the VOLINFO.TXT file found in the
DOCUMENT directory provides complete documentation on the content of
each of the index tables described below.

In volumes of this series after the first, many of these tables will
be cumulative, i.e. they will include entries for data on all earlier
volumes, as well as the current volume.  They will also include any
corrections required for earlier volumes.  This allows for improved
or corrected ancillary files to supersede older ones as appropriate
for processing data on those volumes.  Only EDRCAT.TAB and the large
RIMCAT.TAB are specific to the current volume.  A cumulative version
of EDRCAT.TAB will be present as CUMINDEX.TAB.  OBSCAT.TAB appears
only in a cumulative version.


EDRCAT.TAB:  The EDR CATalog table contains an entry for each EDR on the
CD.  Each entry contains various information including EDR, Vicar and
Spike file name information, target and mission status descriptions and
various NIMS instrument parameters.  The cumulative version is called
CUMINDEX.TAB.

OBSCAT.TAB:  The OBServation CATalog table contains an entry for each
observation for which data is present on this volume or earlier volumes
in this series.  Each entry includes the observation name, spacecraft
clock range, starting universal time, principal target and various NIMS
instrument parameters.  It is used by ISIS NIMS cube generation software
to point to the EDRs containing data for an observation. 

RIMCAT.TAB:  The RIM CATalog table contains an entry for each RIM (60
2/3 second interval) of data in the EDRs on the CD.  Each entry contains
the RIM count, name of the observation it belongs to, principal target,
universal time, and various NIMS instrument parameters.

DRKCAT.TAB:  The DaRK CATalog table contains an entry for each Dark
Current file in the CALIB directory on the CD.  Each entry includes the
filename and the time interval of its applicability.

BOOMCAT.TAB:  The BOOM CATalog table contains an entry for each boom
obscuration file (currently just one) on the CD.  Each entry includes
the filename and the time interval of its applicability.

(A CALCAT.TAB table, summarizing NIMS calibration files, will be added
in later CDs when the calibration files themselves are included.)