PDS_VERSION_ID          = PDS3
RECORD_TYPE             = STREAM

OBJECT                  = TEXT
   INTERCHANGE_FORMAT   = ASCII
   PUBLICATION_DATE     = 2007-02-20 
   NOTE                 = "MGS E-Kernel Information"
END_OBJECT              = TEXT
                                                                     
END 

General information about SPICE E-kernels
=========================================

   The purpose of the Events (E) -kernel is to store different kinds of
   the spacecraft and science instrument events related information
   such as spacecraft and instrument commands, status parameters,
   records of spacecraft activities, ground events, and so on, and to
   systematize and provide access to this data in relational data base
   -like fashion.

   The means of an access to the EK data are provided via collection of
   FORTRAN 77 subroutines that are part of the SPICELIB library or C
   functions that are part of the CSPICE library or using SPICE system
   utility program INSPEKT to browse E-kernel contents. The
   subroutines/functions can be integrated into user application
   programs while the INSPEKT program can be used to view E-kernel
   information interactively. The SPICE system toolkit for a number of
   computer platforms or information regarding how it can be obtained
   is located in the "/software" subdirectory of the main directory of
   this dataset.
   
   To use E-kernels with INSPEKT program, a Leapseconds (LSK) is
   required.
   
   Refer to the "ek.req" and "inspekt.ug" documents provided with the
   toolkit or available from the NAIF Node of PDS if SPICE toolkit is
   not included with this data set to get more information on how to
   access E-kernel data.


MGS E-kernels provided on this volume
=====================================

   The following MGS E-kernels are provided on this volume:
   
   -- MGS Spacecraft Sequence EK files:
 
           mgs_crus_*_u*.bes      MGS Cruise Sequence EK files created
                                  by converting integrated and updated
                                  with real-time commands Predicted
                                  Events Files (PEFs) to SPICE EK
                                  format using PEF2EK SPICE Utility
                                  Program;

           mgs_map_*_u*.bes       MGS Mapping, Extended and Extended-
                                  Extended Sequence EK files created by
                                  converting integrated and updated
                                  with real-time commands Predicted
                                  Events Files (PEFs) to SPICE EK
                                  format using PEF2EK SPICE Utility
                                  Program; 

   -- MGS Spacecraft Dictionary EK files:
 
           mgs_cmdict_[VER].bdb   MGS Spacecraft Command Dictionary EK 
                                  file created from command definitions
                                  contained in Spacecraft Command
                                  Dictionary database;
 
           mgs_acdict_[VER].bdb   MGS Spacecraft Activity Dictionary EK 
                                  file created from spacecraft activity
                                  definitions contained in SEQGEN
                                  Spacecraft Activity Type file;
 
           mgs_gedict_[VER].bdb   MGS Spacecraft Ground Event Dictionary 
                                  EK file created from ground event
                                  definitions contained in SEQGEN
                                  Spacecraft Model file;

      If this volume contains multiple dictionary EK files, the one with 
      the latest version ([VER]) supersedes all previous versions.
 
   -- MGS Experimenter's Notebook EK files:
              
           mgs_daa_[PHASE].ten    E-kernel files containing all notes 
                                  regarding telemetry data quality for
                                  the whole or a portion of a
                                  particular phase of the mission,
                                  submitted by DAA team, JPL to the
                                  MGSENB System operated by NAIF. Refer
                                  to the EK coverage table provided
                                  below to find out coverage of a
                                  particular EK file.
 
           mgs_mola_[PHASE].ten   E-kernel files containing all notes 
                                  regarding MOLA operations for the
                                  whole or a portion of a particular
                                  phase of the mission, submitted by
                                  various members of the MOLA science
                                  and operations teams to the MGSENB
                                  System operated by NAIF;
           
           mgs_rs_[PHASE].ten     E-kernel files containing all notes 
                                  regarding Radio Science operations
                                  for the whole or a portion of a
                                  particular phase of the
                                  mission, submitted by various members
                                  of the Radio Science teams to the
                                  MGSENB System operated by NAIF;
           
           mgs_scops_[PHASE].ten  E-kernel files containing all notes 
                                  regarding spacecraft operations for
                                  the whole or a portion of a
                                  particular phase of the mission,
                                  submitted by SCOPS team, LMA to the
                                  MGSENB System operated by NAIF;
           
           mgs_sst_[PHASE].ten    E-kernel files containing all notes 
                                  for the whole or a portion of a
                                  particular phase of the mission,
                                  submitted by various members of the
                                  Science Support team to the MGSENB
                                  System operated by NAIF;

           mgs_tes_[PHASE].ten    E-kernel files containing all notes 
                                  regarding TES operations for the
                                  whole or a portion of a particular
                                  phase of the mission, submitted by
                                  various members of the TES science
                                  and operations teams to the MGSENB
                                  System operated by NAIF. Refer
                                  to the EK coverage table provided
                                  below to find out coverage of a
                                  particular EK file.
           

MGS ENB EK Coverage Table
=========================

   This table summarizes coverage of the MGS ENB EK files provided on
   this volume:

           [PHASE]    Map.    Start      Stop    
            token    Cycles    Date      Date    
          --------- ------ ---------- ----------
            premap    ---   1996-11-23 1999-03-08
            map1      1-3   1999-03-09 1999-06-01
            map2      4-6   1999-06-02 1999-08-24
            map3      7-9   1999-08-25 1999-11-16
            map4     10-12  1999-11-17 2000-02-08
            map5     13-15  2000-02-09 2000-05-02
            map6     16-18  2000-05-03 2000-07-25
            map7     19-21  2000-07-26 2000-10-17
            map8     22-25  2000-10-18 2001-01-31
            ext1     25-27  2001-02-01 2001-04-03
            ext2     28-30  2001-04-04 2001-06-26
            ext3     31-33  2001-06-27 2001-09-18
            ext4     34-36  2001-09-19 2001-12-11
            ext5     37-39  2001-12-12 2002-03-05
            ext6     40-42  2002-03-06 2002-05-28
            ext7     43-45  2002-05-29 2002-08-20
            ext8     46-48  2002-08-21 2002-11-12
            ext9     49-51  2002-11-13 2003-02-04
            ext10    52-54  2003-02-05 2003-04-29
            ext11    55-57  2003-04-30 2003-07-22
            ext12    58-60  2003-07-23 2003-10-14
            ext13    61-63  2003-10-15 2004-01-06
            ext14    64-66  2004-01-07 2004-03-30
            ext15    67-69  2004-03-31 2004-06-22
            ext16    70-72  2004-06-23 2004-09-14
            ext17    73-75  2004-09-15 2004-12-07
            ext18    76-78  2004-12-08 2005-03-01
            ext19    79-81  2005-03-02 2005-05-25
            ext20    82-84  2005-05-26 2005-08-16
            ext21    85-87  2005-08-17 2005-11-08
            ext22    88-90  2005-11-09 2006-01-31
            ext23    91-93  2006-02-01 2006-04-25
            ext24    94-96  2006-04-26 2006-07-18
            ext25    97-99  2006-07-19 2006-10-10
            ext26      100  2006-10-11 2006-11-03


Kernel File Details
===================

   The most detailed description of the data in a text EK file is
   provided in metadata included inside the description area of the
   file. This information can be viewed using any text editor program.
   
   The most detailed description of the data in a binary EK file is
   provided in metadata included inside the comment area of the file.
   This information can be viewed using utility programs COMMNT and
   SPACIT included into the NAIF Toolkit.


Contact Information
===================

   Regarding MGS project specific information provided in this data set
   and for general information about SPICE system:
   
      Charles H. Acton, Jr, 
      (818)-354-3869, 
      Chuck.Acton@jpl.nasa.gov, 
      
   or 
   
      Boris Semenov 
      (818)-354-8136 
      Boris.Semenov@jpl.nasa.gov
      
   address:
   
      Navigation and Ancillary Information Facility (NAIF)
      Jet Propulsion Laboratory
      MS 301-125L
      4800 Oak Grove Drive
      Pasadena CA 91109 USA 

