Document title: Description of ISIS 2 Pass Header File Format
Project: ISIS
NDADS Datatype: ISIS2_TOPS_HEADER_ASCII and TOPS_HEADER
Super-EID: Documents
There may be other documents also identified by this super-EID.
NDADS filename: ISIS2_HEADER_FORMAT.DOC
TRF entry: b46765.txt in NSSDC's controlled digital document library, Mar. 1998
Document text follows:
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Description of ISIS 2 Pass Header File Format
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The information contained in items 1-10 are entered by the A/D operator. Items
1-7 and 9 are from the tape log sheets. 

 1. Satellite Number  (1:Alouette 1, 2:Alouette 2, 3:ISIS 1, 4:ISIS 2)
 2. Station Name  (3 letter code)
 3. Station Code  (2 digit code)
 4. Tape Number  (5 digit number plus letter to indicate pass order on tape)
 5. Pass Number  (5 digit number)
 6. Start Date and Time of Data Recording  (YY/MM/DD (YYDOY) HH:MM:SS)
 7. End Date and Time of Data Recording  (YY/MM/DD (YYDOY) HH:MM:SS)
 8. A/D Conversion Date and Time  (YY/MM/DD (YYDOY) HH:MM:SS)
 9. Comments From Station Log
10. A/D Operator Comments
11. Number of Ionogram Headers to Follow

The following will be repeated for the number of ionograms listed above: Any
omitted information is due to being unable to determine such information 
during the processing of the pass. 

Two Lines Containing Filenames of Files Created 
Some Quality Control Comments
Satellite 
Station                                      (3 LETTER CODE)
Transmitter Power
Sounder/Receiver                             (ON/OFF)
Swept Frequency Range                        (NORMAL/EXTENDED)
DMODE                                        (ON/OFF)
GMODE                                        (ON/OFF)
Sounder Mixed Mode                           (ON/OFF)
AIT Mode                                     (ON/OFF)
Frequency of Fixed Frequency (MHz)
Year (Last 2 Digits)                          (Frame Sync UT)
Day of Year                                   (Frame Sync UT)
Hour                                          (Frame Sync UT)
Minute                                        (Frame Sync UT)
Second (to the microsecond)                   (Frame Sync UT)
LMT (HHMM)                                    (At time of Frame Sync)
GGLatitude (Deg)                              (At time of Frame Sync)
GGLongitude (Deg)                             (At time of Frame Sync)
Height (km)                                   (At time of Frame Sync)
GMLTM (HHMM)                                  (At time of Frame Sync)
GMLAT (Deg)                                   (At time of Frame Sync)
GMLONG (Deg)                                  (At time of Frame Sync)
Gyro Frequency (MHz)                          (At time of Frame Sync)
Invariant Latitude (Deg)                      (At time of Frame Sync)
Dip (Deg)                                     (At time of Frame Sync)
CHI (Deg)                                     (At time of Frame Sync)
Sunlight                                      (SL/NSL at time of Frame Sync) 
L Shell                                       (At time of Frame Sync)
C.E.P.                                        (ON/OFF)
VLF Rcvr.                                     (ON/OFF)
R.P.A.                                        (ON/OFF)
I.M.S.                                        (ON/OFF)
S.P.S.                                        (ON/OFF)
E.P.D.                                        (ON/OFF)
Red. Line Phot.                               (ON/OFF)
Aur. Scan. Phot.                              (ON/OFF)