Mission Operations Days: 2002/026 to 2002/032
January 26, 2002 00:00:00 GMT to February 01, 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 + 3 set 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, January 26, 2002
None
Sunday, January 27, 2002
None
Monday, January 28, 2002
2002/028 21:31:23 Real-Time MOD_ALARMS_CP_ST_06('enable') procedure executed to clear yellow alarm and reset limits.
Tuesday, January 29, 2002
None
Wednesday, January 30, 2002
2002/030 00:07:05 Real-Time MOD_ALARMS_CP_ST_06('enable') procedure executed to clear yellow alarm and reset limits.
2002/030 21:01:06 ATC OA15: SDSM OPEN fixed SD
2002/030 21:52:58 22:26:31 ATC OA19: SRCA Full Radiometric, side A
2002/030 22:15:06 22:15:11 Real Time MOD_ALARMS_CP_ST_06('disable') executed to disable alarms for MOD_SS_CP_STATUS_06.
2002/030 22:15:30 22:16:23 Real Time MOD_MEM_DUMP(6,16,45312,0,1,1)
2002/030 22:16:42 22:17:33 Real Time MOD_MEM_DUMP(6,16,45568,0,1,1) executed to dump formatter error addresses.
2002/030 22:18:06 22:18:38 Real - Time MOD_MEM_LOAD('AM1_MPR_MODIS_FR_P_C_C_1',16,'N','DISABLE',1,1)
2002/030 22:18:58 22:19:26 Real - Time MOD_MEM_LOAD('AM1_MPR_MODIS_FR_P_C_C_2',16,'N','DISABLE',1,1) executed to reset formatter error address counter.
2002/030 22:19:58 22:20:50 Real Time MOD_MEM_DUMP(6,16,45312,0,1,1)
2002/030 22:21:06 22:21:49 Real Time MOD_MEM_DUMP(6,16,45568,0,1,1) executed to dump formatter error addresses.
2002/030 22:39:58 ATC OA16: SDSM SCREENED fixed sun
Thursday, January 31, 2002
2002/031 04:28:28 - 05:25:59 OA23: SRCA Full Spatial, side A
2002/031 12:40:12 - 13:31:51 OA22: SRCA Full Spectral, part 1, side A
2002/031 14:35:56 - 15:10:41 OA22: SRCA Full Spectral, part 2, side A
2002/031 15:56:18 - 16:47:34 OA22: SRCA Full Spectral, part 3, side A
2002/031 17:51:57 - 18:29:55 OA22: SRCA Full Spectral, part 4, side A
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming Week's MODIS Events:
Friday, February 1, 2002
MODIS Lunar Calibration
2002/032 20:19:13 ATC MODIS formatter to DAY rate
2002/032 20:19:15 ATC MOD_SET_FR_SCIABNORM set to ABNORM (abnormal)
2002/032 20:19:17 ATC MOD_SET_FR_PC_DCRCMP set to OFF
2002/032 20:19:19 ATC MOD_SET_FR_PV_DCRCMP set to OFF
2002/032 20:19:21 ATC MOD_SET_FR_ENC_DELTA sets sector scan to the 3072 position.
2002/032 20:25:51 ATC MOD_SET_FR_ENC_DELTA sets sector scan to the 0 position.
2002/032 20:25:53 ATC MOD_SET_FR_PV_DCRCMP set to ON
2002/032 20:25:55 ATC MOD_SET_FR_PC_DCRCMP set to ON
2002/032 20:25:57 ATC MOD_SET_FR_SCIABNORM set to NORM (normal)
2002/032 20:25:59 ATC MODIS formatter to NIGHT rate
Maneuvers:
The next MODIS Lunar Calibration via a spacecraft roll maneuver is scheduled for February 1st, 2002 (DOY 2002/032) with data collection from 20:19:21 to 20:25:51. The roll angle will be -3.4357 degrees.
The DMU planned to follow the IAM by one week was advanced to Wednesday, January 16, 2002, at 15:39:00 for 14 seconds. DMU Maneuvers are much shorter and less complex than IAMs, as no attitude changes or significant instrument re-configurations are required. Therefore, the maneuver was deemed safe and not susceptible to major impact by the sporadic network events. As a safety precaution, Terra Flight Operations Team (FOT) personnel were stationed in the backup EOC to take over operational responsibility in the event of any problems. There were no network issues during the maneuver.
The IOT has been notified that the Terra Deep Space Calibration Maneuver has been postponed once again. The maneuver date is not expected 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 Terra and Aqua spacecraft simultaneously.
MODIS Anomalies:
Formatter Error Events:
The Formatter Error Count is now approaching 10.6 Million Events.
The Formatter Error Rate has been increasing over the past few weeks with the counter rollover time approximately every six hours and thirty-fifty minutes (not counting calibrations).
Error tracking spreadsheets have been updated and 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_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 are being observed.
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: 195.7 of 500 hours
SRCA 10W Lamp #2: 148.83 of 500 hours
SRCA 10W Lamp #3: 158.03 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 558.9 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1805 of 3022 Movements
Nadir Aperture Door: 534 of 1316 Movements
Space View Door: 437 of 1316 Movements