Data Quality History

Since SOST monitors those events which may cause measurement data quality degradation, the table below summarizes periods when one of the triggering activities, described in Data Quality, has occurred.

The columns labelled ’ABS_ORB Start’ and ’ABS_ORB Stop’ indicate the number of the orbit including the UTC start/stop times of the event. The columns ’UTC - Start’ and ’UTC - Stop’ indicate the UTC times of the period with degraded performance. Note that these times can be approximations only. In case of detector temperatures the stop time is taken from the weekly monitoring plots for channel 1 indicating the orbit when a stable temperature level has been reached (not when the temperature is within the specified limits). Channels 7 & 8 require longer to reach a stable status. The OBM temperatures reaches thermal stability earlier (see page Data Quality).

Select year: 2012 / 2011 / 2010 / 2009 / 2008 / 2007 / 2006 / 2005 / 2004 / 2003

Year 2012
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
09-May-2012: ESA declares ENVISAT mission ended!
SCIAMACHY operations suspended due to major ENVISAT anomaly
(loss of communication links) in orbit 52868 (08-APR-2012, 12:28:00 UTC)
52318 n.a. 01-MAR-2012
06:47:06		 n.a.
 end OCM period Line-of-Sight (LoS) possible
52219 52225 23-FEB-2012
09:25:00		 23-FEB-2012
17:57:19		 recovery from HTR/RF ATC/TC
51788 51802 24-JAN-2012
09:28:02		 25-JAN-2012
07:19:07		 recovery from STANDBY ATC/TC
51687 51693 17-JAN-2012
09:30:36		 17-JAN-2012
17:13:49		 recovery from HTR/RF ATC/TC
Year 2011
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
50318 50323 14-OCT-2011
01:27:00		 14-OCT-2011
09:53:00		 platform in YSM/FPM Line-of-Sight (LoS) possible
50021 50027 23-SEP-2011
09:30:36		 23-SEP-2011
18:06:34		 recovery from HTR/RF ATC/TC
49820 49826 09-SEP-2011
09:42:07		 09-SEP-2011
18:19:47		 recovery from HTR/RF ATC/TC
49633 49639 27-AUG-2011
08:27:14		 27-AUG-2011
17:56:16		 recovery from HTR/RF ATC/TC
49072 49080 19-JUL-2011
08:02:55		 20-JUL-2011
12:48:26		 recovery from HTR/RF ATC/TC
48325 48336 28-MAY-2011
08:08:43		 29-MAY-2011
01:12:44		 recovery from STANDBY ATC/TC
47567 47589 05-APR-2011
13:56:54		 07-APR-2011
01:18:30		 recovery from OFF-SAFE ATC/TC
47393 47404 24-MAR-2011
11:17:55		 25-MAR-2011
04:15:20		 recovery from STANDBY ATC/TC
Year 2010
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
45641 45653 22-NOV-2010
12:35:24		 23-NOV-2010
07:06:15		 recovery from R/W WAIT ATC/TC
45396 45408 05-NOV-2010
11:16:38		 06-NOV-2010
04:48:57		 recovery from R/W WAIT ATC/TC
45261 45353 27-OCT-2010
01:43:53		 02-NOV-2010
10:25:00		 platform in YSM Line-of-Sight (LoS) possible
44968 44979 06-OCT-2010
14:40:46		 07-OCT-2010
07:40:05		 recovery from STANDBY ATC/TC
44351 44357 24-AUG-2010
11:12:08		 24-AUG-2010
20:47:37		 recovery from HTR/RF ATC/TC
44148 44154 10-AUG-2010
07:43:05		 10-AUG-2010
16:26:04		 recovery from HTR/RF ATC/TC
43647 n.a. 06-JUL-2010
07:48:00		 n.a.
 end OCM period Line-of-Sight (LoS) possible
43063 43066 26-MAY-2010
12:12:12		 26-MAY-2010
16:45:02		 platform attitude anomaly Line-of-Sight (LoS) possible
42645 n.a. 27-APR-2010
07:28:18		 n.a.
 end OCM period Line-of-Sight (LoS) possible
42476 42488 15-APR-2010
12:23:46		 16-APR-2010
07:08:28		 recovery from R/W WAIT ATC/TC
41887 41899 05-MAR-2010
08:56:39		 06-MAR-2010
03:35:46		 recovery from R/W WAIT ATC/TC
41733 41738 22-FEB-2010
14:45:52		 22-FEB-2010
21:29:22		 recovery from HTR/RF ATC/TC
41643 n.a. 16-FEB-2010
07:52:46		 n.a.
 end OCM period Line-of-Sight (LoS) possible
41430 41442 01-FEB-2010
11:12:44		 02-FEB-2010
05:22:07		 recovery from R/W WAIT ATC/TC
41201 41212 16-JAN-2010
10:50:52		 17-JAN-2010
03:44:23		 recovery from STANDBY ATC/TC
41130 41135 11-JAN-2010
11:34:56		 11-JAN-2010
19:05:37		 platform attitude anomaly Line-of-Sight (LoS) possible
Year 2009
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
40641 n.a. 08-DEC-2009
07:55:32		 n.a.
 end OCM period Line-of-Sight (LoS) possible
40371 40383 19-NOV-2009
11:12:44		 20-NOV-2009
05:47:59		 recovery from R/W WAIT ATC/TC
40155 40156 04-NOV-2009
07:51:10		 04-NOV-2009
09:31:46		 ENVISAT collision avoidance manoeuvre Line-of-Sight (LoS) possible
39639 n.a. 29-SEP-2009
07:49:01		 n.a.
 end OCM period Line-of-Sight (LoS) possible
38938 38944 11-AUG-2009
08:23:35		 11-AUG-2009
17:06:18		 recovery from HTR/RF ATC/TC
38637 n.a. 21-JUL-2009
07:41:43		 n.a.
 end OCM period Line-of-Sight (LoS) possible
38230 38236 22-JUN-2009
21:17:00		 23-JUN-2009
06:02:21		 recovery from HTR/RF ATC/TC
38153 38165 17-JUN-2009
12:10:55		 18-JUN-2009
06:59:50		 recovery from STANDBY ATC/TC
37980 37992 05-JUN-2009
09:50:55		 06-JUN-2009
04:56:15		 recovery from STANDBY ATC/TC
37137 n.a. 07-APR-2009
12:32:01		 n.a.
 end OCM period Line-of-Sight (LoS) possible
36664 36681 05-MAR-2009
19:18:01		 06-MAR-2009
15:10:02		 platform attitude anomaly Line-of-Sight (LoS) possible
36664 36678 05-MAR-2009
11:38:32		 06-MAR-2009
09:49:25		 recovery from STANDBY ATC/TC
36402 36422 15-FEB-2009
03:38:34		 16-FEB-2009
13:09:00		 platform attitude anomaly Line-of-Sight (LoS) possible
36134 n.a. 27-JAN-2009
11:24:00		 n.a.
 end OCM period Line-of-Sight (LoS) possible
Year 2008
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
35574 35848 19-DEC-2008
08:05:12		 07-JAN-2009
10:12:25		 non-nominal decontamination
Note: interleaved with planned transfer to STANDBY/HEATER/MEASUREMENT between orbits 35819-35834  		 ATC/TC
35133 n.a. 18-NOV-2008
11:47:00		 n.a.
 end OCM period Line-of-Sight (LoS) possible
34906 34911 02-NOV-2008
16:18:52		 02-NOV-2008
23:11:20		 recovery from HTR/RF ATC/TC
34643 34645 15-OCT-2008
07:17:06		 15-OCT-2008
09:12:03		 ATC readjustment ATC/OBM
34131 n.a. 09-SEP-2008
11:39:32		 n.a.
 end OCM period Line-of-Sight (LoS) possible
33890 33903 23-AUG-2008
16:42:10		 24-AUG-2008
13:07:45		 recovery from STANDBY ATC/TC
33129 n.a. 01-JUL-2008
12:42:38		 n.a.
 end OCM period Line-of-Sight (LoS) possible
32127 n.a. 22-APR-2008
12:46:02		 n.a.
 end OCM period Line-of-Sight (LoS) possible
31968 31972 11-APR-2008
10:08:48		 11-APR-2008
15:31:27		 TC readjustment TC (only channels
4 & 5)
31553 31559 13-MAR-2008
09:33:46		 13-MAR-2008
19:28:44		 platform attitude anomaly Line-of-Sight (LoS) possible
31125 n.a. 12-FEB-2008
11:44:48		 n.a.
 end OCM period Line-of-Sight (LoS) possible
30566 30570 04-JAN-2008
11:40:47		 04-JAN-2008
16:51:56		 TC readjustment TC (only channels
4 & 5)
Year 2007
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
30264 30278 14-DEC-2007
09:22:06		 15-DEC-2007
07:17:05		 recovery from STANDBY ATC/TC
30136 30150 05-DEC-2007
09:29:56		 06-DEC-2007
08:40:26		 recovery from STANDBY ATC/TC
29165 29189 28-SEP-2007
13:28:17		 30-SEP-2007
05:24:59		 recovery from OFF-SAFE ATC/TC
28318 28329 31-JUL-2007
07:27:00		 01-AUG-2007
03:30:01		 recovery from HTR/RF ATC/TC
28119 n.a. 17-JUL-2007
11:34:53		 n.a.
 end OCM period Line-of-Sight (LoS) possible
27873 27874 30-JUN-2007
07:27:00		 30-JUN-2007
08:37:34		 recovery from HTR/RF ATC/TC
26945 26955 26-APR-2007
12:20:22		 27-APR-2007
03:47:16		 TC readjustment TC
26616 n.a. 03-APR-2007
11:39:16		 n.a.
 end OCM period Line-of-Sight (LoS) possible
26441 26447 22-MAR-2007
07:22:58		 22-MAR-2007
16:03:04		 TC readjustment TC (only channels
4 & 5)
25614 n.a. 23-JAN-2007
12:57:01		 n.a.
 end OCM period Line-of-Sight (LoS) possible
25540 25545 18-JAN-2007
08:50:41		 18-JAN-2007
15:42:57		 TC readjustment TC (only channels
4 & 5)
Year 2006
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
25073 25081 16-DEC-2006
16:41:05		 17-DEC-2006
05:45:06		 recovery from OFF-SAFE ATC/TC
24844 24857 30-NOV-2006
16:41:05		 01-DEC-2006
14:10:59		 recovery from OFF-SAFE ATC/TC
24754 24760 24-NOV-2006
11:01:50		 24-NOV-2006
19:32:54		 recovery from HTR/RF ATC/TC
23725 n.a. 13-SEP-2006
13:37:46		 n.a.
 end OCM period Line-of-Sight (LoS) possible
23698 23717 11-SEP-2006
14:41:36		 12-SEP-2006
22:48:20		 recovery from OFF-SAFE ATC/TC
22163 22170 27-MAY-2006
09:46:20		 27-MAY-2006
21:02:00		 recovery from HTR/RF ATC/TC
21634 21640 20-APR-2006
10:47:20		 20-APR-2006
20:24:38		 recovery from HTR/RF ATC/TC
21547 21552 14-APR-2006
09:51:45		 14-APR-2006
16:51:56		 recovery from HTR/RF ATC/TC
21477 21498 09-APR-2006
11:35:20		 10-APR-2006
22:19:36		 recovery from OFF-SAFE ATC/TC
21320 21333 29-MAR-2006
11:53:01		 30-MAR-2006
09:40:48		 total solar eclipse TC (only channel 5)
21245 21251 24-MAR-2006
07:31:16		 24-MAR-2006
16:11:42		 TC readjustment TC (only channels
4 & 5)
21306 n.a. 28-MAR-2006
13:49:34		 n.a.
 end OCM period Line-of-Sight (LoS) possible
20605 20619 07-FEB-2006
13:31:20		 08-FEB-2006
12:33:15		 recovery from HTR/RF ATC/TC
20588 20600 06-FEB-2006
09:05:20		 07-FEB-2006
04:41:52		 recovery from R/W WAIT ATC/TC
20204 n.a. 10-JAN-2005
13:02:10		 n.a.
 end OCM period Line-of-Sight (LoS) possible
20143 20149 06-JAN-2006
07:59:25		 06-JAN-2006
16:31:49		 TC readjustment TC (only channels
4 & 5)
Year 2005
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
18415 n.a. 07-SEP-2005
14:37:25		 n.a.
 end OCM period Line-of-Sight (LoS) possible
16739 16755 13-MAY-2005
11:40:20		 14-MAY-2005
13:59:29		 recovery from R/W WAIT ATC/TC
16686 16690 09-MAY-2005
18:37:20		 10-MAY-2005
01:00:33		 recovery from HTR/RF ATC/TC
16192 16198 05-APR-2005
07:23:53		 05-APR-2005
16:05:57		 TC readjustment TC (only channels
4 & 5)
15924 n.a. 17-MAR-2005
14:08:18		 n.a.
 end OCM period Line-of-Sight (LoS) possible
14936 n.a. 07-JAN-2005
13:43:45		 n.a.
 end OCM period Line-of-Sight (LoS) possible
Year 2004
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
14675 14912 20-DEC-2004
08:05:12		 05-JAN-2005
19:55:53		 non-nominal decontamination
Note: interleaved with planned transfer to STANDBY/HEATER/MEASUREMENT between orbits 14882-14898  		 ATC/TC
14632 14638 17-DEC-2004
07:59:32		 17-DEC-2004
16:31:49		 TC readjustment TC (only channels
4 & 5)
14217 14232 18-NOV-2004
07:12:20		 19-NOV-2004
07:48:42		 recovery from HTR/RF ATC/TC
13546 13559 02-OCT-2004
11:05:08		 03-OCT-2004
08:00:00		 recovery from R/W WAIT ATC/TC
13430 13443 24-SEP-2004
08:34:30		 25-SEP-2004
04:56:15		 recovery from HTR/RF ATC/TC
13393 n.a. 21-SEP-2004
18:32:01		 n.a.
 end OCM period Line-of-Sight (LoS) possible
13110 13125 01-SEP-2004
07:56:33		 03-SEP-2004
11:50:18		 collision avoidance manoeuvre (orbit 13110) and orbit restoration (orbit 13125) ENVISAT orbit
12286 12303 06-JUL-2004
10:22:06		 07-JUL-2004
13:33:37		 recovery from R/W WAIT ATC/TC
12070 12087 21-JUN-2004
07:56:33		 22-JUN-2004
11:50:18		 reduced pointing performance (YSM instead of SYSM) ENVISAT attitude
12031 12208 18-JUN-2004
14:46:52		 30-JUN-2004
22:16:43		 non-nominal decontamination ATC/TC
11471 11482 10-MAY-2004
11:55:37		 11-MAY-2004
05:02:00		 recovery from HTR/RF ATC/TC
11372 11377 03-MAY-2004
13:54:35		 03-MAY-2004
20:59:07		 TC readjustment TC (only channels
4 & 5)
11100 n.a. 14-APR-2003
13:55:00		 n.a.
 end OCM period Line-of-Sight (LoS) possible
10911 10919 01-APR-2004
09:02:16		 01-APR-2004
21:04:52		 TC readjustment TC (only channels
7 & 8)
10681 10684 16-MAR-2004
07:26:47		 16-MAR-2004
11:04:09		 TC readjustment TC (only channels
4 & 5)
10098 n.a. 04-FEB-2003
13:15:00		 n.a.
 end OCM period Line-of-Sight (LoS) possible
10023 10027 30-JAN-2004
08:18:24		 30-JAN-2004
13:30:44		 TC readjustment TC (only channels
4 & 5)
9883 9899 20-JAN-2004
12:34:53		 21-JAN-2004
16:18:50		 recovery from HTR/RF ATC/TC
9685 9698 06-JAN-2004
16:23:48		 07-JAN-2004
14:07:11		 recovery from R/W WAIT ATC/TC
Year 2003
ABS_ORB
Start		 ABS_ORB
Stop		 UTC - Start UTC - Stop Event Affected System
9407 9673 18-DEC-2003
07:30:50		 05-JAN-2004
19:58:46		 non-nominal decontamination
Note: interleaved with HTR/RF and
recovery between orbits 9412-9426
and orbits 9439-9482  		 ATC/TC
9280 9328 09-DEC-2003
10:00:00		 12-DEC-2003
17:48:32		 attitude tests (platform in Yaw Steering mode) Line-of-Sight (LoS)
9239 9253 06-DEC-2003
12:37:00		 07-DEC-2003
11:47:16		 recovery from OFF-SAFE ATC/TC
8684 n.a. 28-OCT-2003
18:20:00		 n.a.
 end CCU s/w upgrade / OCM period Line-of-Sight (LoS) possible
8591 8594 22-OCT-2003
07:17:58		 22-OCT-2003
10:52:39		 TC readjustment TC (only channels
4 & 5)
7954 7964 07-SEP-2003
17:57:54		 08-SEP-2003
10:35:24		 recovery from OFF-SAFE ATC/TC
7574 7827 12-AUG-2003
06:00:38		 29-AUG-2003
20:53:22		 non-nominal decontamination
Note: interleaved with HTR/RF and
recovery between orbits 7634-7664  		 ATC/TC
7417 7424 01-AUG-2003
06:45:38		 01-AUG-2003
17:12:03		 TC readjustment TC (only channels
4 & 5)
6778 6779 17-JUN-2003
15:33:28		 17-JUN-2003
17:22:10		 data rate overflow n.a.
6384 6449 21-MAY-2003
02:46:18		 25-MAY-2003
15:00:00		 non-nominal decontamination ATC/TC
6383 n.a. 21-MAY-2003
01:08:02		 n.a.
 end PMC upgrade / OCM period Line-of-Sight (LoS) possible
6301 6308 15-MAY-2003
07:37:00		 15-MAY-2003
18:03:47		 TC readjustment TC (only channels
4 & 5)
5887 5894 16-APR-2003
09:32:01		 16-APR-2003
19:55:53		 TC readjustment TC (only channels
4 & 5)
5764 5773 07-APR-2003
18:24:16		 08-APR-2003
09:35:06		 anomalies* HSM*
*possible corruption of measurement data due to HSM anomalies
5718 5766 04-APR-2003
14:12:14		 07-APR-2003
21:19:14		 non-nominal decontamination ATC/TC
5516 5527 21-MAR-2003
10:40:45		 22-MAR-2003
06:16:43		 recovery from R/W WAIT ATC/TC
5477 5491 18-MAR-2003
17:09:01		 19-MAR-2003
17:55:10		 recovery from STANDBY ATC/TC
5207 5212 27-FEB-2003
21:32:20		 28-FEB-2003
06:08:06		 TC readjustment TC (only channels
4 & 5)
5136 5152 22-FEB-2003
21:14:50		 23-FEB-2003
23:51:35		 recovery from STANDBY ATC/TC
5073 5086 18-FEB-2003
12:48:04		 19-FEB-2003
09:12:04		 recovery from R/W WAIT ATC/TC
4457 4479 06-JAN-2003
12:08:59		 07-JAN-2003
23:28:35		 recovery from HTR/RF ATC/TC
4380 4428 01-JAN-2003
01:29:18		 04-JAN-2003
11:25:42		 non-nominal decontamination ATC/TC


Page generated 12 March 2003; last update: 10 May 2012