Mission Operations Days: 2002/131 to 2002/137
May 11, 2002 00:00:00 GMT to May 17, 2002 00:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
| AM-1 "Terra" is in Normal Mode PFM MODIS is in A-Side Science Mode |
||
|---|---|---|
| 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 | Off | Nominal |
| SRCA | Off | Nominal |
| PS1 Survival Heater | Enabled | Nominal |
| PS2 Survival Heater | Enabled | Nominal |
| Timing Generator | A On; B Off | Nominal |
| Flight Software | Rev BD + 6 sets of patches
|
Nominal |
| Inhibit Ids Set | None | Nominal |
| TMON 66 | Disabled | Nominal |
| TMON 67 | Disabled | Nominal |
| TMON 68 | Enabled | Nominal |
| TMON 69 | Disabled | Nominal |
This Week's Completed MODIS Activities:
Saturday, May 11, 2002
None
Sunday, May 12, 2002
None
Monday, May 13, 2002
None
Tuesday, May 14, 2002
None
Wednesday, May 15, 2002
2002/135 21:34:59 - 22:32:30 ATC OA23: SRCA Full Spatial, side A.
Thursday, May 16, 2002
None
Friday, May 17, 2002
2002/137 19:40:38 Real-Time MOD_MEM_HALT
The procedure MOD_MEM_HALT was executed as a No-Op to reset the MOD_SS_FR_LAST EVENT telemetry point. This telemetry point indicated a message of 1b (SECT bad frame count - end).
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Upcoming calibrations for the month of May include an SRCA Full Radiometric and bi-weekly SD/SDSM calibrations.
Maneuvers:
The next possible MODIS Lunar Calibration will be towards the end of May.
The sixth Terra inclination maneuver has been postponed (originally scheduled for 4/2/2002). The new date for the maneuver is not yet known. The maneuver will only be done if it does not interfere with any Aqua spacecraft launch activities.
The Terra Deep Space Calibration Maneuver is still postponed. The maneuver date is not expected until late summer of 2002.
MODIS Anomalies:
On day of year 128 at 21:11, the formatter EEPROM was loaded with a one word patch. In the event that the formatter is shut down, upon restart, this patch will prevent the formatter from resetting due to the error events.
Formatter Error Events:
The current patches loaded into the MODIS Formatter record the number of formatter error events (but not the address where they occurred). The error rate has increased slightly since the instrument safe mode recovery with up to 200,000 errors occurring per day. For data on the error events, please see the link below.
The most recent error tracking spreadsheets can be retrieved from:
ftp://ftp.mcst.ssai.biz/pub/permanent/IOT/am1/analysis/FR_events/
An MS Excel spreadsheet called, AM1_FR_error_rollovers_current.xls contains the data for the times each error count 'roll over' occurs.
General Instrument Comments:
MODIS is in A-side Science Mode.
MODIS Telemetry Trends:
All systems appear to be functioning properly. Tracking of the Formatter Error Rate has resumed.
Non-MODIS Significant Events:
Science Data Loss Reports can be viewed at:
http://jupiter02.gsfc.nasa.gov:591/ssrloss/
Select "Search Data Losses" and choose Data Type: MOD
Then press the big SUBMIT button.
Limited Life Item Status:
SRCA 10W Lamp #1: 200.4 of 500 hours
SRCA 10W Lamp #2: 152.2 of 500 hours
SRCA 10W Lamp #3: 161.4 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 559.5 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1853 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements