Mission Operations Days: 2000/197 to 2000/203
July 15, 2000 00:00:00 GMT to July 21, 2000 00:00:00 GMT
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 15, 2000
None
Sunday, July 16, 2000
None
Monday, July 17, 2000
2000/199 17:45 Real-time Set SVD software step position to 4020
2000/199 17:46 Real-time Open SVD 100 steps further
2000/199 19:12 Real-time Dump Door table
2000/199 20:02:00 ATC - Blackbody to 270K
2000/199 20:15:40 – 21:36:44 == DATA LOSS due to hardware problem at White Sands (GSIF recorders down)
Tuesday, July 18, 2000
2000/200 14:00:00 ATC Blackbody to 315K
2000/200 14:04 Real-time Set Blackbody duty cycle to 100%
2000/200 21:00:00 ATC Blackbody to 270K
2000/200 21:00 Real-time Set Blackbody duty cycle to 33%
Wednesday, July 19, 2000
2000/201 19:00:00 ATC Blackbody to 290K
Thursday, July 20, 2000
None
Friday, July 21, 2000
MODIS Roll Maneuver Sequence
2000/203 11:57:18 ATC Load - Set Formatter to Night Rate 00:03:15 early (for 50/50 SSR buffer)
2000/203 12:14:00 ATC Load - Set Formatter to Day Rate (for Lunar Roll)
2000/203 12:14:02 ATC Load - Set SCIABNORM Flag to ABNORM
2000/203 12:14:04 ATC Load - PC DC Restore OFF
2000/203 12:14:06 ATC Load - PV DC Restore OFF
2000/203 12:14:08 ATC Load - Sector Rotation to -3072 (EA to SV and OBCs)
2000/203 12:19:38 ATC Load - Sector Rotation to 0 (Normal)
2000/203 12:19:40 ATC Load - PC DC Restore ON
2000/203 12:19:42 ATC Load - PV DC Restore ON
2000/203 12:19:44 ATC Load - Set SCIABNORM Flag to NORM
2000/203 12:19:46 ATC Load - Set Formatter to Night Rate (for Lunar Roll)
2000/203 12:50:01 ATC Load - Set Formatter to Day Rate 00:03:15 late (for 50/50 SSR buffer)
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Saturday, July 22, 2000
MODIS Lunar View Sequence #1 (no roll)
2000/204 14:16:13 ATC Load - Set Formatter to Night Rate 00:03:15 early (for 50/50 SSR buffer)
2000/204 14:27:10 ATC Load - Set Formatter to Day Rate (for Lunar Roll)
2000/204 14:27:12 ATC Load - Set SCIABNORM Flag to ABNORM
2000/204 14:27:14 ATC Load - PC DC Restore OFF
2000/204 14:27:16 ATC Load - PV DC Restore OFF
2000/204 14:27:18 ATC Load - Sector Rotation to -3072 (EA to SV and OBCs)
2000/204 14:33:48 ATC Load - Sector Rotation to 0 (Normal)
2000/204 14:33:50 ATC Load - PC DC Restore ON
2000/204 14:33:52 ATC Load - PV DC Restore ON
2000/204 14:33:54 ATC Load - Set SCIABNORM Flag to NORM
2000/204 14:33:56 ATC Load - Set Formatter to Night Rate (for Lunar Roll)
2000/204 15:12:11 ATC Load - Set Formatter to Day Rate 00:03:15 late (for 50/50 SSR buffer)
Saturday, July 22, 2000
MODIS Lunar View Sequence #2 (no roll)
2000/204 15:55:07 ATC Load - Set Formatter to Night Rate 00:03:15 early (for 50/50 SSR buffer)
2000/204 16:05:02 ATC Load - Set Formatter to Day Rate (for Lunar Roll)
2000/204 16:05:04 ATC Load - Set SCIABNORM Flag to ABNORM
2000/204 16:05:06 ATC Load - PC DC Restore OFF
2000/204 16:05:08 ATC Load - PV DC Restore OFF
2000/204 16:05:10 ATC Load - Sector Rotation to -3072 (EA to SV and OBCs)
2000/204 16:11:40 ATC Load - Sector Rotation to 0 (Normal)
2000/204 16:11:42 ATC Load - PC DC Restore ON
2000/204 16:11:44 ATC Load - PV DC Restore ON
2000/204 16:11:46 ATC Load - Set SCIABNORM Flag to NORM
2000/204 16:11:48 ATC Load - Set Formatter to Night Rate (for Lunar Roll)
2000/204 16:51:05 ATC Load - Set Formatter to Day Rate 00:03:15 late (for 50/50 SSR buffer)
Sunday, July 23, 2000
None
Monday, July 24, 2000
2000/206 20:02:00 ATC - Blackbody to 270K
Tuesday, July 25, 2000
2000/207 14:00:00 ATC Blackbody to 315K
2000/207 14:?? Real-time Set Blackbody duty cycle to 100%
2000/207 21:00:00 ATC Blackbody to 270K
2000/207 21:?? Real-time Set Blackbody duty cycle to 33%
Wednesday, July 26 2000
2000/208 19:00:00 ATC Blackbody to 290K
Thursday, July 27, 2000
None
Friday, July 28, 2000
None
Maneuvers:
Wednesday, August 2, 2000 - Drag makeup maneuver (215/19:30:00)
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:
Friday, July 21, 2000:
2000/202 18:27:17 max = 84.026K
2000/202 19:27:01 min = 83.848K
General Instrument Comments:
MODIS is in Science Mode on the A-side with the SVD and NAD open.
MODIS Telemetry Trends:
See MODIS Anomalies section.
Non-MODIS Significant Events:
Wednesday, July 19 (Day 201) the EOS Operations Center switched to the upgraded on-line operations software build, Rev C. They will also upgraded to Project Database (PDB) 28. The switchover went well and the MODIS IOT is comfortable with the upgrades.
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