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MODIS IOT Terra Weekly Report
Mission Operations Days: 2001/202 to 2001/208
July 20, 2001 20:00:00 GMT to July 27, 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 + 1 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, July 21, 2001None
Sunday, July 22, 2001None
Monday, July 23, 2001None
Tuesday, July 24, 2001None
Wednesday, July 25, 2001
2001/206 18:09:12-18:20:40 ATC OA-15: SD/SDSM Open
2001/206 19:48:06-19:59:34 ATC OA-16: SD/SDSM Screened
None
Friday, July 27, 2001
An additional 20+ minutes for FR Day Rate was collected during S/C Ground Track Night.
2001/208 14:00:09-14:28:00 ATC FR Night Rate (21:38 minutes less than normal)
2001/208 14:28:00-15:39:02 ATC FR Day Rate (21:38 minutes more than normal)
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
During the upcoming week, it is planned to collect an extra 20 minutes of DAY rate data while the spacecraft is over the night side of the Earth, using SMIR Itwk/Vdet of 79/110 (to be restored to current 79/190 values after data collection). Solar Diffuser calibrations will likely occur on Wednesday, although the precise times have not yet been determined.
Additionally, the Band5 Gains will be decreased by 25% (returning them to the values they were at prior to the PS2 Shutdown Anomaly). This will be done as time permits on either Monday or Tuesday.
Friday, July 27, 2001None
Saturday, July 28, 2001None
Sunday, July 29, 2001None
Monday, July 30, 2001None
Tuesday, July 31, 2001None
Wednesday, August 1, 2001None
Thursday, August 2, 2001None
Friday, August 3, 2001None
Maneuvers:
The next MODIS Lunar Roll Calibration is scheduled for August 9, 2001 ( DOY 221 ) from 05:24:35 to 05:31:05. A second lunar calibration will be performed without a roll maneuver on the same day from 20:23:37 to 20:30:07. During the second roll, the SMIR Itwk/Vdet will be temporarily set to 70/110.
MODIS Anomalies:
Investigation into the PS2 shutdown anomaly is still underway. An anomaly report is expected by the end of this month.
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).
MODIS Telemetry Trends:
Trending has resumed with the instrument on the A-side. All appears nominal at this time.
Non-MODIS Significant Events:
None.
Limited Life Item Status:
SRCA 10W Lamp #1: 189.0 of 500 hours
SRCA 10W Lamp #2: 144.7 of 500 hours
SRCA 10W Lamp #3: 153.9 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 557.9 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1657 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 13:48:43 EST
