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MODIS IOT Terra Weekly Report
Mission Operations Days: 2000/274 to 2000/280
September 29, 2000 20:00:00 GMT to October 6, 2000 20:00:00 GMT
New Gain Values For Bands 24, 25, and 27
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:
Friday, September 29, 2000
2000/273 20:19:27 ATC Load OA-15: SD/SDSM Open
2000/273 21:58:20 ATC Load OA-16: SD/SDSM Screened
None
Sunday, October 1, 2000None
Monday, October 2, 2000None
Tuesday, October 3, 2000
2000/277 17:29 Real-Time Gain Changes (Band, Channel, New Value):
- 24, 1, 98
- 24, 2, 91
- 24, 3, 88
- 24, 4, 89
- 24, 5, 93
- 24, 6, 92
- 24, 7, 85
2000/277 18:45 Real-Time Gain Changes (Band, Channel, New Value):
- 24, 8, 84
- 24, 9, 90
- 24, 10, 85
- 25, 2, 116
- 25, 3, 110
- 25, 4, 105
- 25, 5, 109
2000/277 18:48 Real-Time Gain Changes (Band, Channel, New Value):
- 25, 6, 105
- 25, 7, 109
- 25, 8, 99
- 25, 9, 99
- 25, 10, 105
- 27, 1, 238
- 27, 2, 219
2000/277 19:14 Real-Time Gain Changes (Band, Channel, New Value):
- 27, 3, 231
- 27, 4, 238
- 27, 5, 238
- 27, 6, 238
- 27, 7, 238
- 27, 8, 238
- 27, 9, 238
- 27, 10, 238
2000/278 07:27:08 ATC Load OA-15: SD/SDSM Open
2000/278 09:06:01 ATC Load OA-16: SD/SDSM Screened
2000/278 13:38 Real-Time Memory Dump (6,16,45312,0,1,1)
2000/278 13:39 Real-Time Memory Dump (6,16,45568,0,1,1)
Formatter registers of current count and addresses for each of the formatter errors that
have occurred since formatter restart with new software patch on 230/19:57.
2000/278 19:26 Real-Time MOD_MEM_DUMP(36,550,0,0,1,18)
Verification of the Formatter Gain Changes (Formatter Memory Table 4)
Successful collection of all 18 dumped partitions.
None
Friday, October 6, 2000None
This Week's Scheduled MODIS Activities Not Completed:
Tuesday, October 3, 20002000/277 19:17 Real-Time MOD_MEM_DUMP(36,550,0,0,1,18) Verification of the Formatter Gain Changes (Formatter Memory Table 4). Problems with Online Software resulted in loss of 2 of the 18 dumped partitions.
Upcoming MODIS Events:
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
Maneuvers:
The next MODIS Lunar Roll Maneuver is planned for October 17th.
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, geolocation, and space craft day/night position for each of the formatter events that have occurred since DOY 256. [The most recent events are still under analysis and therefore only partial data is present in the spreadsheet.]
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:
The Drag Makeup Maneuver on 2000-278 (10/04/2000) went nominally.
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 16:44:18 EST
