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MODIS IOT Terra Weekly Report
Mission Operations Days: 2001/237 to 2001/243
August 24, 2001 20:00:00 GMT to August 31, 2001 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 Off; B On | Nominal |
| Flight Software | Rev BD + 2 set of patches
| Nominal |
| Inhibit Ids Set | None | Nominal |
| TMON 66 (SRCA A) | Disabled | Nominal |
| TMON 67 (SRCA B) | Disabled | Nominal |
| TMON 68 (FIFO) | Enabled | Nominal |
| TMON 69 (EPS Current) | Disabled | Nominal |
This Week's Completed MODIS Activities:
Saturday, August 25, 2001None
Sunday, August 26, 2001None
Monday, August 27, 2001None
Tuesday, August 28, 2001one
Wednesday, August 29, 2001
2001/241 20:21:04 ATC OA-16: SD/SDSM Screened
2001/241 21:59:57 ATC OA-15: SD/SDSM Open
None
Friday, August 31, 2001None
This Week's Scheduled MODIS Activities Not Completed:
The formatter memory loads were not performed to clear the existing error addresses/counts.
Upcoming MODIS Events:
Friday, August 31, 2001None
Saturday, September 1, 2001None
Sunday, September 2, 2001None
Monday, September 3, 2001None
Tuesday, September 4, 2001Anticipated day to perform memory load to clear FR error/count buffers
Wednesday, September 5, 2001
Two orbits with SMIR Itwk/Vdet of 79/110
SD/SDSM calibrations
None
Friday, September 7, 2001None
Maneuvers:
The next Lunar Calibration roll maneuver is scheduled for day 2001/250 (September 7, 2001) with data collection from 20:03:47 to 20:10:17. The roll angle will be -7.5106 degrees.
MODIS Anomalies:
The rate of formatter “error events” has increased during the past week to approximately 60-120 per day. There still have not been any noticeable impacts to operations.
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 (FRFSP).
Note: SD/SDSM calibrations were planned to be reduced to once per two weeks. This plan has been revised; SD/SDSM calibrations will continue to be scheduled once each week until the end of November.
MODIS Telemetry Trends:
Trending has resumed with the instrument on the A-side. With the currently decreasing beta angle, the amount of focal plane heater margin is increasing. The intermediate stage cooler temperature is stable.
Non-MODIS Significant Events:
None.
Limited Life Item Status:
SRCA 10W Lamp #1: 189.1 of 500 hours
SRCA 10W Lamp #2: 144.8 of 500 hours
SRCA 10W Lamp #3: 154.0 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 558.0 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1691 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements
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Last Update: Wednesday, 26-Feb-2003 14:08:53 EST
