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MODIS IOT Terra Weekly Report
Mission Operations Days: 2000/281 to 2000/287
October 6, 2000 20:00:00 GMT to October 13, 2000 20:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
|
Terra (AM-1) is in Normal Ops Mode MODIS is in Science Mode - A Side |
||
| Component | State(s) | Comment |
|---|---|---|
| Blackbody | A On (290 K); B Off | Nominal |
| Calibration Electronics | A On; B Off | Nominal |
| Control Processor | A On; B Off | Nominal |
| Nadir Door | Unlatched, Open | Nominal |
| Space View Door | Unlatched, Open | Nominal |
| Solar Diffuser Door | Unlatched, Closed | Nominal |
| FDDI Formatter | A On; B Off | Nominal |
| FDDI Port | A On; B Off | Nominal |
| FIFO Memory | #1 & #2 On; #3 & #4 Off | Nominal |
| Format Processor | A On; B Off | Nominal |
| Power Supplies | #1 On, #2 Off | Nominal |
| PV VIS FPA | A On; B Off | Nominal |
| PV NIR FPA | A On; B Off | Nominal |
| PV SMIR FPA | A On; B Off | Nominal |
| PV LWIR FPA | A On; B Off | Nominal |
| PC LWIR FPA | A On; B Off | Nominal |
| RC Outgas Heaters | All Off (CS, IS, OS) | Nominal |
| RC LWIR FPA Heater | On (83 K) | Nominal |
| RC SMIR FPA Heater | Off | Nominal |
| Scan Assembly | A On; B Off | Nominal |
| SDSM | A Off; B Off | Nominal |
| SRCA | A Off; B Off | Nominal |
| PS1 Survival Heater | Enabled | Nominal |
| PS2 Survival Heater | Enabled | Nominal |
| Timing Generator | A On; B Off | Nominal |
| Flight Software | Rev BD + 5 sets of patches
| Nominal |
| Inhibit Ids Set | None | Nominal |
| TMONs Enabled | 66, 67, 68 | Nominal |
This Week’s Completed MODIS Activities:
Saturday, October 7, 2000None
Sunday, October 8, 2000None
Monday, October 9, 2000None
Tuesday, October 10, 2000None
Wednesday, October 11, 2000None
Thursday, October 12, 2000None
Friday, October 13, 2000None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Saturday, October 14, 2000None
Sunday, October 15, 2000None
Monday, October 16, 20002000/290 21:56:02-22:53:33 ATC SRCA Full Spatial
Tuesday, October 17, 2000
2000/291 14:29:51 ATC Move Formatter to Night ahead by 3:23 to ensure 50/50 day/night
2000/291 15:02:17 ATC Set Formatter to Day Rate
2000/291 15:02:19 ATC Set SCIABNORM Flag to ABNORM
2000/291 15:02:21 ATC PC DC Restore to OFF
2000/291 15:02:23 ATC PV DC Restore to OFF
2000/291 15:02:25 ATC Sector Rotation to -3072 (EA to SV and OBCs)
2000/291 15:08:55 ATC Sector Rotation to Zero (Normal)
2000/291 15:08:57 ATC PC DC Restore to ON
2000/291 15:08:59 ATC PV DC Restore to ON
2000/291 15:09:01 ATC Set SCIABNORM Flag to NORM
2000/291 15:09:03 ATC Set Formatter to Night Rate
2000/291 15:26:03 ATC Move Formatter to Day later by 3:23 to ensure 50/50 day/night
2000/291 15:?? Real-Time Set SMIR Itwk/Vdet to 79/110
2000/291 16:08:45 ATC Move Formatter to Night ahead by 3:23 to ensure 50/50 day/night
2000/291 16:41:37 ATC Set Formatter to Day Rate
2000/291 16:41:39 ATC Set SCIABNORM Flag to ABNORM
2000/291 16:41:41 ATC PC DC Restore to OFF
2000/291 16:41:43 ATC PV DC Restore to OFF
2000/291 16:41:45 ATC Sector Rotation to -3072 (EA to SV and OBCs)
2000/291 16:48:15 ATC Sector Rotation to Zero (Normal)
2000/291 16:48:17 ATC PC DC Restore to ON
2000/291 16:48:19 ATC PV DC Restore to ON
2000/291 16:48:21 ATC Set SCIABNORM Flag to NORM
2000/291 16:48:23 ATC Set Formatter to Night Rate
2000/291 17:04:56 ATC Move Formatter to Day later by 3:23 to ensure 50/50 day/night
2000/291 17:?? Real-Time Set SMIR Itwk/Vdet to 110/226
Wednesday, October 18, 2000
2000/292 19:?? Real-Time Set SMIR Itwk/Vdet to 79/110
2000/292 20:05:00 ATC Blackbody to 315K
2000/292 20:05:30 ATC Blackbody duty cycle to FULL
2000/293 03:00:00 ATC Blackbody to 270K
2000/293 03:00:30 ATC Blackbody duty cycle to THIRD
2000/293 22:00:00 ATC Blackbody to 290K
2000/294 13:?? Real-Time Set SMIR Itwk/Vdet to 110/226
Maneuvers:
Two Roll maneuvers are planned for October 17th. The first maneuver will be roll the S/C - 12.5496 degrees for data collection from2000/ 291 15:02:25 to 2000/291 15:08:55 with SMIR Itwk/Vdet set to 110/226. The second maneuver will roll the S/C -11.8642 degrees for data collection from 16:41:45 to 16:48:15 with SMIR Itwk/Vdet set to 79/110.
MODIS Anomalies:
Continued monitoring for formatter errors and loss of cooler margin.
Attached to this report is a spreadsheet listing the times, addresses, formatter temperature, satellite ground track, and space craft day/night position for each of the formatter events that have occurred since DOY 256.
General Instrument Comments:
MODIS is in Science Mode on the A-side with the SVD and NAD open, operating with the Formatter Resolution Flight Software Patches.
MODIS Telemetry Trends:
The Radiative Cooler intermediate stage temperature has slowly been increasing since approximately day 240. During this time the LWIR focal plane heater margin has been decreasing. The IOT is continuing to trend these telemetry mnemonics.
Non-MODIS Significant Events:
There have been indications that Solar Array Circuit #10 failed at approximately 200/268 15:07:20. Terra still has a power margin so this failure should not impact operations.
Limited Life Item Status:
SRCA 10W Lamp #1: 173.5 of 500 hours
SRCA 10W Lamp #2: 135.9 of 500 hours
SRCA 10W Lamp #3: 145.1 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 556.1 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1429 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements
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Last Update: Tuesday, 14-Jan-2003 16:54:31 EST
