No Earth scan science data (and therefore no Level 2 data) were acquired for 477 orbits in the orbit 216-18233 range (see Table 1). Seventy-two (72) of these orbits were before the start of normal operations. The spacecraft went into safehold on two occasions because of onboard problems - on November 16, 1997, and on December 13, 1998. In each case it took several days to bring the spacecraft back to normal operations.
Table 2 lists 62 orbits that have incomplete daytime 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 interrupt the usual continuous daytime Earth scan data. Each affected orbit has a minimum 3 minute data gap.
Since the beginning of normal operations 97.79% of the possible daytime data is contained in the Level 2 dataset (420.90 orbits missing out of 19051
(19389-339+1)).
| Table 1
EP/TOMS Orbits with No Level 2 Data | ||
| Date | orbits | comment |
| July 17-19, 1996 | 220, 228, 233-263 | (all before normal operations) |
| July 22-24, 1996 | 300-338 | (all before normal operations) |
| November 28, 1996 | 2258 | (bad orbit) |
| November 16-19, 1997 | 7640-7675 | (spacecraft in safehold) |
| December 4-13, 1997 | 7903-8037 | (orbit boost period) |
| November 17-18, 1998 | 12935-12951 | (Leonid meteors) |
| December 13, 1998-January 2, 1999 | 13311-13610 | (spacecraft in safehold) |
| November 17-18, 1999 | 18209-18225 | (Leonid meteors) |
| Table 2
EP/TOMS Orbits with Partial Level 2 Data (percent available shown in parenthesis) | |
| July 16, 1996 | 216 (84%), 219 (61%) |
| July 17, 1996 | 221 (40%), 227 (61%), 229 (40%), 232 (29%) |
| July 19, 1996 | 264 (39%) |
| July 22, 1996 | 299 (12%) |
| July 24, 1996 | 339 (40%) (all before normal operations) |
| October 9, 1996 | 1505 (64%), 1506 (80%) |
| November 28, 1996 | 2257 (38%), 2259 (62%) |
| December 31, 1996 | 2773 (77%) |
| March 9, 1997 | 3794 (65%) |
| November 16, 1997 | 7639 (41%) |
| November 19, 1997 | 7676 (60%) |
| December 4, 1997 | 7902 (38%) |
| December 13, 1997 | 8038 (67%) |
| April 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 19, 1998 | 10312 (99%) |
| May 20, 1998 | 10327 (98%) |
| May 24, 1998 | 10376 (61%), 10377 (39%) |
| June 14, 1998 | 10675 (99%) |
| July 21, 1998 | 11220 (99%) |
| August 23, 1998 | 11692 (99%) |
| September 24, 1998 | 12155 (99%) |
| October 15, 1998 | 12459 (99%) |
| October 29, 1998 | 12663 (99%) |
| October 31, 1998 | 12737 (99%) |
| November 5, 1998 | 12760 (98%) |
| November 6, 1998 | 12780 (97%) |
| November 17, 1998 | 12934 (40%) |
| November 18, 1998 | 12952 (61%) |
| November 25, 1998 | 13051 (99%) |
| December 1, 1998 | 13144 (99%) |
| December 8, 1998 | 13237 (99%) |
| December 10, 1998 | 13279 (99%) |
| December 13, 1998 | 13310 (37%) |
| January 3, 1999 | 13610 (63%), 13617 (99%) |
| January 11, 1999 | 13738 (99%) |
| March 2, 1999 | 14454 (99%), 14455 (99%) |
| November 17, 1999 | 18208 (39%) |
| November 18, 1999 | 18226 (62%) |
| Table 3
EP/TOMS Orbits with Fixed Scene ("stare mode") data | |
| April 1, 1997 | 4152 |
| April 2, 1997 | 4167 |
| April 6, 1997 | 4228, 4230 |
| April 11, 1997 | 4306 |
| April 15, 1997 | 4367 |
| April 16, 1997 | 4382 |
| April 20, 1997 | 4443 |
| April 21, 1997 | 4458 |
| April 25, 1997 | 4519 |
| April 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 |
| June 1, 1997 | 5082 |
| June 2, 1997 | 5097 |
| June 5, 1997 | 5143 |
| June 6, 1997 | 5158 |
| June 7, 1997 | 5173 |
| June 10, 1997 | 5219 |
| June 11, 1997 | 5233, 5234 |
| June 12, 1997 | 5240, 5250 |
| June 14, 1997 | 5277, 5280 |
| June 15, 1997 | 5295 |
| June 16, 1997 | 5309, 5310 |
| June 17, 1997 | 5316, 5326 |
| June 19, 1997 | 5353, 5356 |
| June 20, 1997 | 5371 |
| June 21, 1997 | 5386 |
| June 24, 1997 | 5432 |
| June 25, 1997 | 5446, 5447 |
| June 28, 1997 | 5493 |
| June 29, 1997 | 5508 |