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MODIS IOT Terra Weekly Report
Mission Operations Days: 2002/103 to 2002/109
April 12, 2002 20:00:00 GMT to April 19, 2002 20:00:00 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 + 5 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, April 13, 2002None
Sunday, April 14, 2002None
Monday, April 15, 2002None
Tuesday, April 16, 2002None
Wednesday, April 17, 2002None
Thursday, April 18, 2002None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming Week's MODIS Events:
Friday, April 19, 2002
109/20:57:26 - 21:49:05 ATC OA22: SRCA full spectral side A, part 1
109/22:53:24 - 23:28:09 ATC OA22: SRCA full spectral side A, part 2
110/00:15:24 - 01:06:40 ATC OA22: SRCA full spectral side A, part 3
110/02:09:36 - 02:47:34 ATC OA22: SRCA full spectral side A, part 4
110/04:36:33 - 04:39:04 ATC OA27: PV ECAL
110/08:00:00 ATC OA26: BB to 270K
111/02:00:00 ATC OA26: BB to 280K
111/06:00:00 ATC OA26: BB to 285K
111/09:00:00 ATC OA26: BB to 290K
111/13:00:00 ATC OA26: BB to 295K
111/13:00:30 ATC OA26: BB duty cycle set to FULL
111/15:00:00 ATC OA26: BB to 300K
111/17:00:00 ATC OA26: BB to 315K
111/20:00:00 ATC OA26: BB to 270K
111/20:00:30 ATC OA26: BB duty cycle set to THIRD
112/16:00:00 ATC OA26: BB to 290K
This month's remaining calibration activities will also include an SD/SDSM activity.
Maneuvers:
There will not be a MODIS Lunar Calibration at the beginning or end of April because the required roll angle will exceed the allowable limit. Expect the next possible MODIS Lunar Calibration toward 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:
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). Statistics for the error rate will soon be generated and placed on the Internet. For data on the pre-safe mode 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:
The TERRA Science formatting equipment (SFE) experienced a single event upset (SEU) on Sunday, April 14, 2002. The time of failure was 104/14:00:47. The SFE was turned OFF. It was turned back on on Monday, April 15, 2002, at 105/23:02:38. No MODIS science data was captured during this time.
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: 197.7 of 500 hours
SRCA 10W Lamp #2: 150.7 of 500 hours
SRCA 10W Lamp #3: 159.9 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 559.3 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1841 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements
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Last Update: Thursday, 04-Sep-2003 18:14:23 EDT
