The following FOT scheme is only for WFCs. The structure of a FOT
for NFI the layout is similar but WFC and NFI will not be placed
together on the same FOT.
* Structure of tape:
General part
Science part
* Contents of General part:
Tape Directory
Ephemeris data file
Attitude data file
OBT-UTC conversion data file
IT-diagnostic data file
TCU-HK data file
(optionally Other Satellite HK data files)
* Structure of Science part:
Instrument file set 1 (WFC-1)
Instrument file set 2 (WFC-2)
* Structure of Instrument file set:
Instrument Directory
Initial Slew Observation set (1)
......
Initial Slew Observation set (n)
Normal Observation set (1)
......
Normal Observation set (n)
Final Slew Observation set (1)
.....
Final Slew Observation set (n)
* Contents of Observation set:
Observation Directory
Experiment Configuration file
Instrument HK data file
Science HK data file
Science Event data file
Directories are ASCII files that contain one line for each file or set
of files that is described.
- The Tape Directory describes each file on the FOT
- The Instrument Directory describes each observation set of an instrument
- The Observation Directory describes each file in an observation set
It is possible that a FOT may comprise of more than one tape. As the
distribution tapes may store 2 Megabytes splitting of FOTs is higly
unlikely to occur.
For a complete specification of the FOT refer to the "Mission Support
Component FOT layout Document" (TPZ/GO.SDC-100/FOT-TN/SAX)