Summary of Level 2 Data Coverage
EP/TOMS was launched into a 500 km sun synchronous orbit on
July 2, 1996. The first EP/TOMS Earth scan data were taken
during orbit 216 on July 16, 1996. Normal science operations
began during orbit 339 on July 24, 1996. Orbits prior to 7903
(December 4, 1997) were at the initial 500 km altitude. Orbits
after 8037 (December 13, 1997) were at 740 km altitude after an
orbit boosting maneuver.
No Earth scan science data (and therefore no Level 2 data) were
acquired for the orbits listed in Table 1. Seventy-two (72) of
these orbits were before the start of normal operations.
Table 2 lists orbits that have incomplete data coverage.
Nine (9) of these orbits were prior to normal operations.
Table 3 lists orbits that have some fixed scene view ("stare mode")
data that interrupts the usual continuous daytime Earth scan data.
Each affected orbit has a minimum 3 minute Level 2 data gap.
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Table 1
EP/TOMS Orbits with No Level 2 Data
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Jul 17-19, 1996: 220, 228, 233-263
Jul 22-24, 1996: 300-338 (Prior to Normal Operations)
Nov 28, 1996: 2258
Nov 16-19, 1997: 7640-7675 (Attitude Anomaly)
Dec 4-13, 1997: 7903-8037 (Orbit Boost)
Nov 17-18, 1998: 12935-12951 (Leonid Meteors)
Dec 13, 1998
-Jan 2, 1999: 13311-13610 (Spacecraft Anomaly)
Nov 17-18, 1999: 18209-18225 (Leonid Meteors)
May 14, 2000: 20798 (Operations Error)
Nov 17-19, 2001: 28783-28802 (Leonid Meteors)
Aug 2-12, 2002: 32516-32663 (Spacecraft Anomaly)
Nov 18-19, 2002: 34085-34100 (Leonid Meteors)
May 15-22, 2003: 36657-36767 (Spacecraft Anomaly)
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Table 2
EP/TOMS Orbits with Partial Level 2 Data
(percent available shown in parenthesis)
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Jul 16, 1996: 216 (84%), 219 (61%)
Jul 17, 1996: 221 (40%), 227 (61%), 229 (40%), 232 (29%)
Jul 19, 1996: 264 (39%)
Jul 22, 1996: 299 (12%)
Jul 24, 1996: 339 (40%) (all before normal operations)
Oct 9, 1996: 1505 (64%), 1506 (80%)
Nov 28, 1996: 2257 (38%), 2259 (62%)
Dec 31, 1996: 2773 (77%)
Mar 9, 1997: 3794 (65%)
Nov 16, 1997: 7639 (41%)
Nov 19, 1997: 7676 (60%)
Dec 4, 1997: 7902 (38%)
Dec 13, 1997: 8038 (67%)
Apr 14, 1998: 9807 (82%)
May 1, 1998: 10045 (75%)
May 12, 1998: 10212 (96%), 10213-10216 (38% each)
May 13, 1998: 10217-10223 (38% each), 10224 (40%)
May 24, 1998: 10376 (61%), 10377 (39%)
Nov 17, 1998: 12934 (40%)
Nov 18, 1998: 12952 (61%)
Dec 13, 1998: 13310 (37%)
Jan 3, 1999: 13610 (63%)
Nov 17, 1999: 18208 (39%)
Nov 18, 1999: 18226 (62%)
Feb 5, 2000: 19365 (68%)
May 14, 2000: 20797 (59%), 20799 (52%)
Apr 9, 2001: 25572 (57%)
Nov 17, 2001: 28782 (13%)
Nov 19, 2001: 28803 (49%)
Dec 31, 2001: 29423 (38%)
Jan 1, 2002: 29424 (65%)
Aug 2, 2002: 32515 (59%)
Aug 12, 2002: 32664 (77%)
Nov 18, 2002: 34084 (65%)
Nov 19, 2002: 34101 (63%)
Dec 31, 2002: 34712 (69%)
May 15, 2003: 36656 ( 8%)
May 22, 2003: 36768 (41%)
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Table 3
EP/TOMS Orbits with Fixed Scene ("stare mode") Data
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Apr 1, 1997: 4152
Apr 2, 1997: 4167
Apr 6, 1997: 4228, 4230
Apr 11, 1997: 4306
Apr 15, 1997: 4367
Apr 16, 1997: 4382
Apr 20, 1997: 4443
Apr 21, 1997: 4458
Apr 25, 1997: 4519
Apr 30, 1997: 4595
May 4, 1997: 4656
May 5, 1997: 4671
May 8, 1997: 4717
May 9, 1997: 4732
May 10, 1997: 4747
May 13, 1997: 4793
May 14, 1997: 4808
May 18, 1997: 4869
May 19, 1997: 4884
May 23, 1997: 4945
May 27, 1997: 5006
May 28, 1997: 5021
Jun 1, 1997: 5082
Jun 2, 1997: 5097
Jun 5, 1997: 5143
Jun 6, 1997: 5158
Jun 7, 1997: 5173
Jun 10, 1997: 5219
Jun 11, 1997: 5233, 5234
Jun 12, 1997: 5240, 5250
Jun 14, 1997: 5277, 5280
Jun 15, 1997: 5295
Jun 16, 1997: 5309, 5310
Jun 17, 1997: 5316, 5326
Jun 19, 1997: 5353, 5356
Jun 20, 1997: 5371
Jun 21, 1997: 5386
Jun 24, 1997: 5432
Jun 25, 1997: 5446, 5447
Jun 28, 1997: 5493
Jun 29, 1997: 5508
Last updated July 16, 2003
