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MODIS IOT Terra Weekly Report
Mission Operations Days: 2001/111 to 2001/117
April 20, 2001 20:00:00 GMT to April 27, 2001 20:00:00 GMT
NOTE: BAND 5 GAIN CHANGES were made at 113/13:17:53 – 13:28:08.
NOTE: The solar diffuser sector size was changed from 50 frames to 5 frames, and the SRCA sector size was changed from 10 frames to 55 frames, from 117/12:11:33 to 117/17:15:13. The SCIABNORM flag was set from 117/12:10:39 to 117/17:22:27.
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 + 2 set of patches
| Nominal |
| Inhibit Ids Set | None | Nominal |
| TMONs Enabled | 68 | Nominal |
This Week’s Completed MODIS Activities:
Saturday, April 21, 2001None
Sunday, April 22, 2001None
Monday, April 23, 20012001/113 13:17:53 & 13:28:08 The following gains were changed on BAND 5: Procedure: MOD_GAIN_CHANGE(5,<Detector #>,<New Gain>)
| Detector | Original Gain | New Gain |
|---|---|---|
| 1 | 117 | 66 |
| 2 | 113 | 63 |
| 3 | 115 | 65 |
| 4 | 117 | 66 |
| 5 | 112 | 63 |
| 6 | 112 | 63 |
| 7 | 107 | 59 |
| 8 | 108 | 60 |
| 9 | 102 | 55 |
| 10 | 101 | 54 |
| 11 | 100 | 54 |
| 12 | 99 | 53 |
| 13 | 96 | 51 |
| 14 | 99 | 53 |
| 15 | 100 | 54 |
| 16 | 101 | 54 |
| 17 | 95 | 50 |
| 18 | 107 | 59 |
| 19 | 105 | 57 |
| 20 | 102 | 55 |
2001/113 13:28:30 – 13:32:28 Real-time Dumped Memory Table #4, PV Gain values.
MOD_MEM_DUMP(36,550,0,0,1,18)
2001/113 20:47:32 – 20:57:45 Real-time Set LWIR ITWK/VDET to 79/145,
incrementing the VDET to 233 in steps of 8, 30 second collect duration.
MOD_VDET_SWEEP(‘LWIR’,79,145,0,0,8,11,30)
2001/113 20:57:59 – 20:58:53 Real-time Set LWIR ITWK/VDET to 79/185.
MOD_VDET_SWEEP(‘LWIR’,79,185,0,0,0,0,1)
None
Wednesday, April 25, 2001
115/20:14:26 ATC OA16: SDSM SCREENED
115/21:53:18 ATC OA15: SDSM OPEN
116/19:02:00 Real-time Set Inhibit Id’s 33 (CP) & 54 (SRCA)
Friday, April 27, 2001
117/12:10:39 Real-time Set SCIABNORM flag to ABNORM
117/12:11:33 Real-time Loaded new table #7, sector size definitions, SD=5, SRCA=55
117/12:12:13 Real-time Loaded FSW patch to set SD frames to 5 & SRCA frames to 55
117/12:13:11 Real-time Loaded new table #8, sector start definition to center SRCA 55 frames
over nominal 10 frame sector
117/12:15:30 Real-time Dumped new table #7, sector size definitions, SD=5, SRCA=55
117/12:17:23 Real-time Dumped FSW patch to set SD frames to 5 & SRCA frames to 55
117/12:18:16 Real-time Dumped new table #8, sector start definition to center SRCA 55
frames over nominal 10 frame sector
117/13:17:08 Real-time Cleared inhibit ID 33 (CP)
117/13:17:37 Real-time Cleared inhibit ID 54 (SRCA)
117/14:27:14 – 14:56:14 ATC SRCA Crosstalk test2 Part I
117/15:57:07 – 16:26:07 ATC SRCA Crosstalk test2 Part II
117/17:13:03 Real-time Loaded launch table #7, sector size definitions, SD=50, SRCA=10
117/17:14:00 Real-time Loaded FSW patch to set SD frames to 50 & SRCA frames to 10
117/17:15:13 Real-time Loaded launch table #8, nominal sector start definitions
117/17:16:04 Real-time Dumped launch table #7, sector size definitions, SD=50, SRCA=10
117/17:17:14 Real-time Dumped FSW patch to set SD frames to 50 & SRCA frames to 10
117/17:18:13 Real-time Dumped launch table #8, nominal sector start definitions
117/17:22:27 Real-time Set SCIABNORM flag to NORM
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Friday, April 27, 2001None
Saturday, April 28, 2001None
Sunday, April 29, 2001None
Monday, April 30, 2001None
Tuesday, May 01, 2001None
Wednesday, May 02, 2001None
Thursday, May 03, 2001None
Friday, May 04, 2001None
Maneuvers:
Again, there will be no MODIS roll maneuver in May because the roll angle would have been too great. The next attempt for a roll maneuver will be June. There is a Drag makeup maneuver being planned tentatively for May 8.
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: 185.5 of 500 hours
SRCA 10W Lamp #2: 142.4 of 500 hours
SRCA 10W Lamp #3: 151.6 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 557.3 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1597 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 14:42:31 EST
