Mission Operations Days: 2001/090 to 2001/096
March 31, 2001 00:00:00 GMT to April 06, 2001 00:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
| Terra (AM-1) is in Normal Ops Mode MODIS is in Science Mode - B Side |
||
|---|---|---|
| Component | State(s) | Comment |
| Blackbody | A Off; B On (290 K) | Nominal |
| Calibration Electronics | A Off; B On | Nominal |
| Control Processor | A Off; B On | Nominal |
| Nadir Door | Unlatched, Open | Nominal |
| Space View Door | Unlatched, Open | Nominal |
| Solar Diffuser Door | Unlatched, Closed | Nominal |
| FDDI Formatter | A Off; B On | Nominal |
| FDDI Port | A On; B Off | Nominal |
| FIFO Memory | #1 & #2 Off; #3 & #4 On | Nominal |
| Format Processor | A Off; B On | Nominal |
| Power Supplies | #1 Off; #2 On | Nominal |
| PV VIS FPA | A Off; B On | Nominal |
| PV NIR FPA | A Off; B On | Nominal |
| PV SMIR FPA | A Off; B On | Nominal |
| PV LWIR FPA | A Off; B On | Nominal |
| PC LWIR FPA | A Off; B On | 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 Off; B On | 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 |
| TMONs Enabled | 68 | Nominal |
This Week’s Completed MODIS Activities:
Saturday, March 31, 2001
2001/090 20:19:36 ATC OA-16: SD/SDSM Screened
2001/090 21:58:28 ATC OA-15: SD/SDSM Open
Sunday, April 1, 2001
None
Monday, April 2, 2001
None
Tuesday, April 3, 2001
None
Wednesday, April 4, 2001
2001/094 21:33:08 ATC OA-16: SD/SDSM Screened
2001/094 23:12:01 ATC OA-15: SD/SDSM Open
Thursday, April 5, 2001
2001/095 17:50:15 Real-time Spacecraft attitude configuration change for drag make-up maneuver. Begin possible slight attitude disturbances.
2001/095 19:32:30 Real-time Spacecraft attitude configuration change for drag make-up maneuver. Return to nominal pointing accuracy.
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Friday, April 6, 2001
2001/096 23:43:10 – 01:22:33 ATC OA-18: SDSM Background radiation collection
Saturday, April 7, 2001
2001/097 11:58:39 – 13:38:02 ATC OA-18: SDSM Background radiation collection
Sunday, April 8, 2001
None
Monday, April 9, 2001
2001/099 14:28:37 – 15:20:16 ATC OA-22: SRCA Full Spectral Part 1B
2001/099 16:20:24 – 16:55:09 ATC OA-22: SRCA Full Spectral Part 2A
2001/099 17:46:07 – 18:37:23 ATC OA-22: SRCA Full Spectral Part 3B
2001/099 19:38:10 – 20:16:08 ATC OA-22: SRCA Full Spectral Part 4A
Tuesday, April 10, 2001
None
Wednesday, April 11, 2001
2001/101 21:38:34 ATC OA-16: SD/SDSM Screened
2001/101 22:29:57 – 23:03:30 ATC OA-19: SRCA Full Radiometric
2001/101 23:17:27 ATC OA-15: SD/SDSM Open
Thursday, April 12, 2001
None
Friday, April 13, 2001
None
In addition:
Blackbody calibration: stepped to 315K likely Thursday or Friday (12th/13th)
Electronics calibrations (PV & PC) will be scheduled for the week of the 16th.
A new set of SRCA cross-talk measurements are being planned for later this month and will use memory load patches to change the size of the SRCA sector from 10 frames to 55 frames in the same manner as was done on March 2, 2001.
Maneuvers:
There will be no MODIS roll maneuver in April because the roll angle would have been too great.
Next roll maneuver will be scheduled in May.
A drag make-up maneuver (DMU) was executed on April 5th (Day 2001/095). Due to high solar flux levels, another DMU may be needed within a few weeks.
MODIS Anomalies:
None.
General Instrument Comments:
MODIS is in Science Mode on the B-side with the SVD and NAD open, operating with the Formatter Resolution Flight Software Patches (FRFSP).
MODIS Telemetry Trends:
Nothing new to report.
Non-MODIS Significant Events:
None.
Limited Life Item Status:
SRCA 10W Lamp #1: 182.5 of 500 hours
SRCA 10W Lamp #2: 141.1 of 500 hours
SRCA 10W Lamp #3: 150.3 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 557.2 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1579 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements