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MODIS IOT Terra Weekly Report
Mission Operations Days: 2001/013 to 2001/019
January 12, 2001 20:00:00 GMT to January 19, 2001 20:00:00 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, January 13, 2001
2001/013 16:59:42 ATC Move Formatter to Night ahead by 3:23 to ensure 50/50 day/night
2001/013 17:17:25 FOT ATC commanding: Begin Slew to –3.584 degrees
2001/013 17:20:29 ATC Set Formatter to Day Rate
2001/013 17:20:31 ATC Set SCIABNORM Flag to ABNORM
2001/013 17:20:33 ATC PC DC Restore to OFF
2001/013 17:20:35 ATC PV DC Restore to OFF
2001/013 17:20:37 ATC Sector Rotation to -3072 (EA to SV and OBCs)
2001/013 17:27:07 ATC Sector Rotation to Zero (Normal)
2001/013 17:27:09 ATC PV DC Restore to ON
2001/013 17:27:11 ATC PC DC Restore to ON
2001/013 17:27:13 ATC Set SCIABNORM Flag to NORM
2001/013 17:27:15 ATC Set Formatter to Night Rate
2001/013 17:29:39 FOT ATC commanding: Returned to nominal attitude
2001/013 17:55:53 ATC Move Formatter to Day later by 3:23 to ensure 50/50 day/night
Note: For the second lunar calibration below, the spacecraft did NOT do a roll maneuver. Terra’s nominal attitude allowed for a “free” view of the moon through the space view port.
2001/013 23:35:13 ATC Move Formatter to Night ahead by 3:23 to ensure 50/50 day/night
2001/013 23:54:04 ATC Set Formatter to Day Rate
2001/013 23:54:06 ATC Set SCIABNORM Flag to ABNORM
2001/013 23:54:08 ATC PC DC Restore to OFF
2001/013 23:54:10 ATC PV DC Restore to OFF
2001/013 23:54:12 ATC Sector Rotation to -3072 (EA to SV and OBCs)
2001/014 00:00:42 ATC Sector Rotation to Zero (Normal)
2001/014 00:00:44 ATC PV DC Restore to ON
2001/014 00:00:46 ATC PC DC Restore to ON
2001/014 00:00:48 ATC Set SCIABNORM Flag to NORM
2001/014 00:00:50 ATC Set Formatter to Night Rate
2001/014 00:31:23 ATC Move Formatter to Day later by 3:23 to ensure 50/50 day/night
None
Tuesday, January 16, 2001None
Wednesday, January 17, 2001None
Thursday, January 18, 2001
2001/018 21:17:40 ATC OA-16: SDSM Screened
2001/018 22:56:32 ATC OA-15: SDSM Open
None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Friday, January 19, 2001None
Saturday, January 20, 2001None
Sunday, January 21, 2001None
Monday, January 22, 2001None
Tuesday, January 23, 2001None
Wednesday, January 24, 2001None
Thursday, January 25, 2001None
Friday, January 26, 2001None
Maneuvers:
A drag makeup maneuver was performed by the FOT at 017/19:38:00 to 017/21:08:00.
The next MODIS Lunar Calibration Roll Maneuver is planned for 2001/043, February 12th
MODIS Anomalies:
No formatter anomalies have been detected since switching to B-side science operations. The MODIS IOT is continuing to monitor changes with the radiative cooler temperatures and focal plane power.
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). No new events have been witnessed by the FRFSP since the B-Side Transition on DOY 2000/304.
MODIS Telemetry Trends:
The Radiative Cooler intermediate stage temperature has slowly been increasing since approximately day 2000/240. During this time the LWIR focal plane heater margin has been decreasing. The IOT is continuing to trend these telemetry mnemonics.
Temperature trends are correlating with the solar beta angle. This includes a steadying of the intermediate stage outgas temperature. This temperature is expected to increase again when the beta angle gets smaller.
Non-MODIS Significant Events:
None.
Limited Life Item Status:
SRCA 10W Lamp #1: 179.2 of 500 hours
SRCA 10W Lamp #2: 139.2 of 500 hours
SRCA 10W Lamp #3: 148.4 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 556.6 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1507 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements
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Last Update: Friday, 21-Feb-2003 14:30:29 EST
