Mission Operations Days: 2001/356 to 2001/362
December 22, 2001 00:00:00 GMT to December 28, 2001 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 |
||
|---|---|---|
| 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 | On (83 K) | Nominal |
| 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 Off; B On | Nominal |
| Flight Software | Rev BD + 3 set of patches
|
Nominal |
| Inhibit Ids Set | None | Nominal |
| TMON 66 (SRCA A) | Disabled | Nominal |
| TMON 67 (SRCA B) | Disabled | Nominal |
| TMON 68 (FIFO) | Enabled | Nominal |
| TMON 69 (EPS Current) | Disabled | Nominal |
This Week's Completed MODIS Activities:
Saturday, December 22, 2001
None
Sunday, December 23, 2001
None
Monday, December 24, 2001
None
Tuesday, December 25, 2001
None
Wednesday, December 26, 2001
None
Thursday, December 27, 2001
None
Friday, December 28, 2001
None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Friday, December 28, 2001
None
Saturday, December 29, 2001
None
Sunday, December 30, 2001
None
Monday, December 31, 2001
None
Tuesday, January 1, 2002
None
Wednesday, January 2, 2002
None
Thursday, January 3, 2002
MODIS Lunar Roll (-1.9741 degrees)
003/??:?? Real-time IRU set to High Rate (lower spacecraft attitude precision)
003/10:46:22 ATC Formatter to Night Rate Set ahead by 03:23 to ensure 50/50 day/night data collection.
003/11:13:14 ATC Formatter to Day Rate
003/11:13:16 ATC SCIABNORM flag set to ABNORM
003/11:13:18 ATC PV DCR computation to OFF
003/11:13:20 ATC PC DCR computation to OFF
003/11:13:22 ATC Sector rotation to 3072
003/11:19:52 ATC Sector rotation to 0
003/11:19:54 ATC PC DCR computation to ON
003/11:19:56 ATC PV DCR computation to ON
003/11:19:58 ATC SCIABNORM flag to NORM
003/11:20:00 ATC Formatter to Night Rate
003/11:42:33 ATC Formatter to Day Rate Set later by 03:23 to ensure 50/50 day/night data collection.
003/??:?? Real-Time IRU set to Low Rate (greater spacecraft attitude precision)
Friday, January 4, 2002
None
Maneuvers:
The next MODIS Lunar Calibration via a spacecraft roll maneuver is scheduled for January 3rd, 2001 (2002/003) with data collection from 11:13:22 to 11:19:52. The roll angle will be -1.9741 degrees. See upcoming MODIS events above for command time details.
The IOT has been notified that the Terra Deep Space Calibration Maneuver has been postponed once again. The maneuver is not expected to be performed until late summer of 2002 at the earliest. The reasoning for this delay was to allow the EOS Operations Center (EOC) time to adjust to operating the Terra and Aqua spacecraft simultaneously.
MODIS Anomalies:
Formatter Error Events:
Error tracking spreadsheets have been updated and can be retrieved from:
ftp://www.mcst.ssai.biz/ftp/pub/permanent/IOT/am1/analysis/FR_events/
An MS Excel spreadsheet called, AM1_FR_error_rollovers_MMDDYY.xls contains the data for the times each of the error count “roll over” occurs (with the MMDDYY denoting the date the spreadsheet was made, the more recent date containing the most up-to-date information).
General Instrument Comments:
MODIS is in Science Mode on the A-side with the SVD and NAD open, operating with the Formatter Resolution Flight Software Patches (FRFSP).
MODIS Telemetry Trends:
No abnormal telemetry trends have been detected.
Non-MODIS Significant Events:
Science Data Loss Reports can be viewed at:
http://jupiter02.gsfc.nasa.gov/
Select "Search Data Losses" and choose Data Type: MOD
Then press the big SUBMIT button.
Limited Life Item Status:
SRCA 10W Lamp #1: 192.8 of 500 hours
SRCA 10W Lamp #2: 147.2 of 500 hours
SRCA 10W Lamp #3: 156.4 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 558.6 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1781 of 3022 Movements
Nadir Aperture Door: 534 of 1316 Movements
Space View Door: 437 of 1316 Movements