These two routine housekeeping activities affected AATSR data quality during the Envisat mission. The tables below list the periods during which they were conducted. For full information on these activities, see the AATSR Events Report.
Table 1. AATSR outgassing periods
| Start time | End time | Orbit start | Orbit end | Details |
| 22/07/2002 09:06 | 24/07/2002 11:21 | 02051 | 02081 | Commanded outgassing |
| 31/01/2003 09:39 | 03/02/2003 17:15 | 04814 | 04861 | Commanded outgassing |
| 01/08/2003 09:17 | 05/08/2003 10:34 | 07419 | 07477 | Commanded outgassing |
| 25/11/2003 10:10 | 28/11/2003 18:30 | 09080 | 09128 | Commanded outgassing |
| 16/04/2004 08:40 | 19/04/2004 17:04 | 11126 | 11173 | Commanded outgassing |
| 23/07/2004 09:00 | 27/07/2004 15:39 | 12529 | 12589 | Commanded outgassing |
| 19/11/2004 10:00 | 22/11/2004 18:10 | 14233 | 14281 | Commanded outgassing |
| 08/04/2005 08:19 | 11/04/2005 13:16 | 16236 | 16283 | Commanded outgassing |
| 22/08/2005 08:46 | 25/08/2005 15:07 | 18183 | 18230 | Commanded outgassing |
| 16/12/2005 09:40 | 19/12/2005 15:07 | 19844 | 19891 | Commanded outgassing |
| 18/05/2007 08:19 | 21/05/2007 11:50 | 27258 | 27303 | Commanded outgassing |
| 24/09/2007 12:27 | 28/09/2007 13:39 | 29107 | 29165 | Envisat service module (SM) anomaly + outgassing |
| 23/06/2008 07:46 | 26/06/2008 14:18 | 33012 | 33059 | Commanded outgassing |
| 25/11/2008 08:10 | 28/11/2008 21:33 | 35231 | 35282 | Commanded outgassing |
| 26/05/2009 09:32 | 29/05/2009 21:09 | 37837 | 37887 | Commanded outgassing |
| 11/01/2010 09:01 | 14/01/2010 14:07 | 41129 | 41175 | Commanded outgassing |
| 29/06/2010 08:49 | 02/07/2010 20:31 | 43548 | 43598 | Commanded outgassing |
| 20/10/2010 16:12 | 27/10/2010 18:55 | 45170 | 45272 | Commanded outgassing (Note 1) |
| 04/04/2011 13:50 | 06/04/2011 15:41 | 47553 | 47583 | Envisat SM anomaly + outgassing |
| 07/10/2011 08:19 | 10/10/2011 14:49 | 50222 | 50269 | Commanded outgassing |
| 23/01/2012 07:28 | 26/01/2012 13:52 | 51773 | 51820 | Envisat SM memory fault + outgassing |
Note 1: Data were generated and are available in the archive from the beginning of this outgassing period. However, from 23/10/2010 22:47 to 27/10/2010 18:55 (orbits 45217 to 45272), AATSR was taken out of MEASUREMENT mode for manoeuvres connected with the Envisat Mission Extension.