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MODIS IOT Terra Weekly Report
Mission Operations Days: 2000/189 to 2000/196
July 7, 2000 20:00:00 GMT to July 14, 2000 20:00:00
Terra Spacecraft and MODIS Instrument Status:
|
Terra (AM-1) is in Normal Ops Mode MODIS is in Science Mode - A Side MODIS has an anomaly with the LWIR focal plane. See description below. |
||
| 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 | Off | CFPA Anomaly Investigation |
| 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 On; B Off | Nominal |
| Flight Software | Rev BD + 2 sets of patches
| Nominal |
| Inhibit Ids Set | None | Nominal |
| TMONs Enabled | 66, 67 | Nominal |
This Week’s Completed MODIS Activities:
Saturday, July 8, 2000None
Sunday, July 9, 2000None
Monday, July 10, 20002000/192 20:02:00 ATC - Blackbody to 270K
Tuesday, July 11, 2000
2000/193 14:02:00 ATC Blackbody to 315K
2000/193 14:00:00 Real-time Set Blackbody duty cycle to 100%
2000/193 21:00:00 ATC Blackbody to 270K
2000/193 21:30:00 Real-time Set Blackbody duty cycle to 33%
2000/194 14:40-14:45 Real-time Band 27 Gain changes from MCST
2000/194 14:45 Real-time Dump Gain Table
2000/194 19:00:00 ATC Blackbody to 290K
2000/194 21:00:00 – 21:37:13 ATC Load - OA25: SRCA 1W Spatial w/Sector Rotation,
the BC and ND Filter
2000/194 22:45:00 – 23:22:13 ATC Load - OA25: SRCA 10W Spatial w/ Sector Rotation
and Spectral Slit, the BC and ND Filter
None
Friday, July 14, 20002000/196 16:15:50 Real-time Turn off LWIR Heater
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Saturday, July 15, 2000None
Sunday, July 16, 2000None
Monday, July 17, 2000
2000/199 ?? Real-time Open SVD 100 steps further
2000/199 20:02:00 ATC - Blackbody to 270K
200/14:00:00 ATC Blackbody to 315K
200/14:?? Real-time Set Blackbody duty cycle to 100%
200/21:00:00 ATC Blackbody to 270K
200/21:?? Real-time Set Blackbody duty cycle to 33%
201/19:00:00 ATC Blackbody to 290K
Thursday, July 20, 2000None
Friday, July 21, 2000Roll maneuver from 12:14:08 to 12:19:38 (not scheduled yet)
Maneuvers:
Friday, July 21, 2000 - MODIS Roll Maneuver (2000/203/12:07:22 – 12:25:24)
MODIS Anomalies:
The Radiative Cooler has negative margin, therefore the cold focal planes are no longer under thermal control. This affects bands 5, 6, 7, and 20-36. Analysis is underway. Solar Diffuser Door operations are suspended during this analysis.
Current maximum and minimum temperature ranges of the LWIR FPA:
Thursday, July 13, 2000:
2000/195 max = 83.859K
2000/195 min = 83.648K
General Instrument Comments:
MODIS is in Science Mode on the A-side with the SVD and NAD open.
The new gain values for Band 27 are as follows:
Detector 1 - 238
Detector 2 - 219
Detector 3 - 231
Detector 4 - 238
Detector 5 - 238
Detector 6 - 238
Detector 7 - 238
Detector 8 - 238
Detector 9 - 238
Detector 10 - 238
MODIS Telemetry Trends:
See MODIS Anomalies section.
Non-MODIS Significant Events:
Monday, July 17 (Day 199) the EOS Operations Center will be switching to the upgraded on-line operations software build, Rev C. They will also be upgrading to Project Database (PDB) 28. The MODIS IOT has reviewed these upgrades and is ready for the switchover.
Data processing by EDOS is currently running at a "degraded level". For a detailed summary of the events that have affected their products, view the EOS System Status web page (http://jupiter02.gsfc.nasa.gov:591/sysstat/) and select the EDOS summary link at the top of the page. A key item to note is from day 6/27/2000 at 12:11:19 PM: " The second major issue is the amount of data that EDOS is receiving since ASTER has been fully turned on." With the new, higher data output of ASTER, even less "spare" time will be available to EDOS for the processing of backlogged or reprocessing of data.
Limited Life Item Status:
SRCA 10W Lamp #1: 170.4 of 500 hours
SRCA 10W Lamp #2: 134.3 of 500 hours
SRCA 10W Lamp #3: 143.5 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 555.6 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1381 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements
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Last Update: Tuesday, 14-Jan-2003 13:27:35 EST
