An overview of the organization of Stand Alone Telemetry Files produced from data returned by the DE -1 Energetic Ion Composition Spectrometer (EICS) instrument is given in the FORMAT.SFD file also contained on each optical volume. A copy of this file will be displayed by clicking here .
EICS Stand Alone Telemetry Files, documentation describing them, and software to read them are available from NASA's Data Archive and Distribution Service.
Summary data files of 96 second average fluxes at a number of pitch angles for H+, O+, and He+ ions have been produced and archived at the Lockheed Palo Alto Laboratories in a highly compressed non-standard format. Click here for more information.
The data quality symbols used are '---', N, C, A, and blank :
--- indicates that the data have not yet been inspected for
quality.
no symbol (ie. blank) indicates that the data are in one of
two standard modes (i.e. DRUM or FAST mode) and have been included
in the EICS high resolution summary data base.
N indicates that the data have NOT been included in our high
resolution summary data base. Reasons for not including the
data interval include, but are not limited to, instrument off,
instrument mode other than DRUM or FAST, telemetry noise,
duplicate file, or a short data interval.
C indicates that the data in the lowest energy channel include
a spurious count rate from the photoionization of residual
neutral gases in the preacceleration region of the spectrometer
as discussed by Shelley et al., Geophys. Res. Lett. 9, p942,
1982.
A indicates that information about the orientation of the EICS
sensor relative to the spacecraft velocity is not available.
Pitch angle information is always available.
These Codes appear in fields 8,9, and 10 as illustrated below:
FIELDS FIELD FIELD FIELD FIELD FIELD FIELDS FIELD FIELD
1 & 2 3 4 5 6 7 8,9,10 11 12
#REC HHMM HHMM
YYDDD IN START STOP START STOP FLAGS TAPE# PROCESS
FILE TIME TIME MILLISECONDS OF DAY (QUAL) TIME
----- ---- ----- ---- ------------------------ ----- ----- --------
81258A 164 0539 0601 20352000 21660567 N T63 07/21/86
81258D 313 0829 0910 30528000 33028608 N T64 07/21/86
...
81260G 553 2246 0000 81984000 5375 C T125 07/31/86
------------------------------------------------------------------------------
81261K 205 0000 0027 0 1637384 C T125 07/31/86
81261L 594 0302 0422 10944000 15693421 T125 07/31/86
...
81262E 491 1304 1409 47040000 50965893 T68 07/18/86
81262K 619 1408 1530 50880000 55829892 CA T200 03/24/87
81262H 231 1642 1712 60096000 61941912 T125 07/31/86
81262F 529 2250 0000 82176000 5991 N T72 07/18/86
------------------------------------------------------------------------------
In addition to the start and stop times of an interval, each line
of the file EICSDATA.LIS contains: the date the data were added to the
EICS stand alone telemetry data base ( field 12); file name and location
information ( fields 1,2 and 11); file size information (the approximate
number of 8 second telemetry blocks in the file, field 3)
A complete description of the data in eicsdata.lis is given in the file: text_describing_the_eicsdata.lis_file or available on the LASP server at https://lasp.colorado.edu/timas/DE/
The summary data files are now available on request in NASA's Common Data Format. For more information click here..