Mission Operations Days: 2002/068 to 2002/074
March 09, 2002 00:00:00 GMT to March 15, 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 + 4 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, March 9, 2002
None
Sunday, March 10, 2002
None
Monday, March 11, 2002
None
Tuesday, March 12, 2002
None
Wednesday, March 13, 2002
Drag Makeup Maneuver
2002/072 19:01:00 Low Fidelity Spacecraft pointing
2002/072 20:00:37 - 20:01:07 Real-Time 30 second drag makeup burn
2002/072 20:16:00 High Fidelity Spacecraft pointing
2002/072 21:32:37 - 21:45:48 OA16:SDSM SCREENED (Fixed sun view) - A side
2002/072 22:24:22 - 22:57:55 OA19:SRCA Full Radiometric - A side
2002/072 23:11:30 - 23:24:41 OA15:SDSM OPEN (Fixed SD view) - A side
Thursday, March 14, 2002
2002/073 14:53:08 - 15:50:39 OA23:SRCA Full Spatial - A side
Friday, March 15, 2002
None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming Week's MODIS Events:
Tuesday, March 19, 2002
2002/078 15:49:25 - 16:01:06 ATC MOD_CLOSE_NAD_SVD.1 Contingency for TERRA inclination adjust. Will be inhibited if the maneuver is nominal.
Maneuvers:
There will be no MODIS Lunar Calibration at the beginning of April because the required roll angle will exceed the allowable limit.
There has been a change to the Terra inclination maneuver schedule. A new constraint has been imposed to have the maneuvers completed prior to the launch of the Aqua spacecraft (currently April 18, 2002). The (remaining) new inclination maneuver dates are March 19 and April 4, 2002. This new plan violates a previous constraint of not performing more than two maneuvers in any 7-week period. Therefore, Flight Dynamics products for dates beyond the next two maneuvers will have inaccuracies.
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 Formatter Error Rate is still increasing with a buffer rollover time of about five hours and fifteen minutes. The current error-logging plan to only monitor the first 15 noted addresses was deemed the best monitoring approach at present. Therefore, the current limit of 15 addresses will continue to be used.
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) and a Formatter Time Code Patch.
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: 196.3 of 500 hours
SRCA 10W Lamp #2: 149.4 of 500 hours
SRCA 10W Lamp #3: 158.6 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 559.2 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1823 of 3022 Movements
Nadir Aperture Door: 534 of 1316 Movements
Space View Door: 437 of 1316 Movements