Mission Operations Days: 2001/062 to 2001/068
March 03, 2001 00:00:00 GMT to March 09, 2001 00:00:00 GMT
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NOTE: BAND 5 GAIN CHANGES were temporarily made for 068/16:34:30 – 20:38:34.
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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 3, 2001
None
Sunday, March 4, 2001
None
Monday, March 5, 2001
2001/064 20:14:55 – MOD_FR_DELAY_CHANGE(‘SR’,0) ran to set the sector delay back to zero from 50.
Tuesday, March 6, 2001
None
Wednesday, March 7, 2001
2001/066 21:16:03 OA-16: SDSM SCREENED
2001/066 22:54:56 OA-15: SDSM OPEN
Thursday, March 8, 2001
2001/067 21:08:05 – 22:05:36 OA-23: SRCA Full Spatial
Friday, March 9, 2001
2001/068 16:34:30 – 16:41:10 B5 Gain change:
| Detector | From | To |
|---|---|---|
| 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 |
2001/068 17:41:48 OA-16: SDSM SCREENED
2001/068 19:20:41 OA-15: SDSM OPEN
2001/068 20:32:07 – 20:38:34 B5 Gain change back:
| Detector | From | To |
|---|---|---|
| 1 | 66 | 117 |
| 2 | 63 | 113 |
| 3 | 65 | 115 |
| 4 | 66 | 117 |
| 5 | 63 | 112 |
| 6 | 63 | 112 |
| 7 | 59 | 107 |
| 8 | 60 | 108 |
| 9 | 55 | 102 |
| 10 | 54 | 101 |
| 11 | 54 | 100 |
| 12 | 53 | 99 |
| 13 | 51 | 96 |
| 14 | 53 | 99 |
| 15 | 54 | 100 |
| 16 | 54 | 101 |
| 17 | 50 | 95 |
| 18 | 59 | 107 |
| 19 | 57 | 105 |
| 20 | 55 | 102 |
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Saturday, March 10, 2001
None
Sunday, March 11, 2001
None
Monday, March 12, 2001
None
Tuesday, March 13, 2001
072/20:05:20 – 20:25:00 ADC_IRU_TO_HI_RATE
072/21:30:51 ATC Move Formatter to Night ahead by 3:23 to ensure 50/50 day/night
072/21:32:52 FOT ATC commanding: Begin slew to –16.512 degrees
072/21:40:14 ATC Set Formatter to Day Rate
072/21:40:16 ATC Set SCIABNORM Flag to ABNORM
072/21:40:18 ATC PC DC Restore to OFF
072/21:40:20 ATC PV DC Restore to OFF
072/21:40:22 ATC Sector Rotation to –3072 (EA to SV and OBCs)
072/21:46:52 ATC Sector Rotation to Zero (Normal)
072/21:46:54 ATC PV DC Restore to ON
072/21:46:56 ATC PC DC Restore to ON
072/21:46:58 ATC Set SCIABNORM Flag to NORM
072/21:47:00 ATC Set Formatter to Night Rate
072/21:54:40 FOT ATC commanding: Return to nominal attitude
072/21:55:00 – 22:06:00 ADC_IRU_TO_LO_RATE
072/22:27:01 ATC Move Formatter to Day later by 3.23 to ensure 50/50 day/night
Wednesday, March 14, 2001
None
Thursday, March 15, 2001
None
Friday, March 16, 2001
None
Maneuvers:
The next MODIS Roll Maneuver for a Lunar Calibration through the Space View Port is scheduled for March 13th at approx. 21:32:52. The next Drag Makeup Maneuver (delta-V) is scheduled for March 14th at approx. 19:40:00
MODIS Anomalies:
There appears to be a problem processing the science data collected during the SRCA activities on Friday, March 2nd, 2001 (day 061). Specifically, this may be related to the change in sector sizes for the Solar Diffuser and SRCA. If this is the cause, it will affect data from 061/14:06:30 to 061/18:21:56 GMT. This problem is not yet well understood.
The SRCA sector delay was left at a value of 50 (1 frame delay) after the SRCA activities on Friday March 2nd, (day 061). This delay will be changed back to zero on Monday, March 5th. This has no impact to MODIS operations except for SRCA sector data. No SRCA activities will be scheduled until the delay is set to zero. The SRCA crosstalk activities will be corrected and re-CM’d.
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:
Temperature trends are correlating with the solar beta angle.
Non-MODIS Significant Events:
None
Limited Life Item Status:
SRCA 10W Lamp #1: 182.3 of 500 hours
SRCA 10W Lamp #2: 141.0 of 500 hours
SRCA 10W Lamp #3: 150.2 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 557.1 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1555 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements