Mission Operations Days: 2002/320 to 2002/326
November 16, 2002 00:00:00 GMT to November 22, 2002 00:00:00 GMT
Aqua Spacecraft and MODIS Instrument Status:
| PM-1 "Aqua" is in Fine Pointing Normal Mode FM1 MODIS is in B-Side Science Mode |
||
|---|---|---|
| Component | State(s) | Comment |
| Blackbody | A Off; B On | Science Mode |
| Calibration Electronics | A Off; B On | Science Mode |
| Control Processor | A Off; B On | Science Mode |
| Nadir Door | Unlatched, Open | Science Mode |
| Space View Door | Unlatched, Open | Science Mode |
| Solar Diffuser Door | Unlatched, Closed | Science Mode |
| FDDI Formatter | A Off; B On | Science Mode |
| FDDI Port | A Off; B On | Science Mode |
| FIFO Memory | #1 & #2 Off; #3 & #4 On | Science Mode |
| Format Processor | A Off; B On | Science Mode |
| Power Supplies | #1 Off, #2 On | Science Mode |
| PV VIS FPA | A Off; B On | Science Mode |
| PV NIR FPA | A Off; B On | Science Mode |
| PV SMIR FPA | A Off; B On | Science Mode |
| PV LWIR FPA | A Off; B On | Science Mode |
| PC LWIR FPA | A Off; B On | Science Mode |
| RC Outgas Heaters | All 3 (CS, IS, OS) Off | Science Mode |
| RC LWIR FPA Heater | Off | Science Mode |
| RC SMIR FPA Heater | On | Science Mode |
| Scan Assembly | A Off; B On | Science Mode |
| SDSM | Off | Science Mode |
| SRCA | Off | Science Mode |
| PS1 Survival Heaters | Enabled | Science Mode |
| PS2 Survival Heaters | Enabled | Science Mode |
| Timing Generator | A Off; B On | Science Mode |
| Flight Software | Rev BJ | Science Mode |
| Inhibit Ids Set | None | Science Mode |
This Week's Completed MODIS Activities:
Saturday, November 16, 2002
None
Sunday, November 17, 2002
None
Monday, November 18, 2002
2002/322 13:28:55 MCL MOD_OA16_SDSM_SCREEN.2 OA16: SDSM Calibration with SD Screened - B Side
2002/322 15:07:48 MCL MOD_OA15_SDSM_OPEN.1 OA15: SDSM Calibration with SD Open - B Side
Tuesday, November 19, 2002
None
Wednesday, November 20, 2002
None
Thursday, November 21, 2002:
2002/325 13:24:11-13:26:42 MCL MOD_OA27_PV_ECAL.1 OA27: PV ECAL
(Centered on Ground Track Night to Day Crossing over South Pole)
Friday, November 22, 2002
None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Monday, November 25, 2002:
2002/329 11:55:55 MCL MOD_OA16_SDSM_SCREEN.2 OA16: SDSM Calibration with SD Screened - B Side
2002/329 13:34:48 MCL MOD_OA15_SDSM_OPEN.1 OA15: SDSM Calibration with SD Open - B Side
Maneuvers:
The Deep Space Calibration pitch maneuver(s) have been indefinitely suspended pending mission review.
MODIS Anomalies:
The MODIS commanding anomaly is still being investigated. A patch was loaded to the Aqua spacecraft on Tuesday, October 11, 2002 (DOY 2002/284). This patch switched the MODIS ground-command timing slots with the MODIS stored-command timing slots. This transfers the risk associated with dropping commands from stored commands to real-time ground commands.
No problems have been reported since the patch was loaded and the last command drop occurred on September 2, 2002 (DOY 2002/245). The results of the patch will be evaluated for some time before the next configuration change is made. A final patch to the Aqua Bus Scheduler Task (BST) is being considered which would eliminate the timing issues to MODIS for both ground commands and stored commands.
On November 7, 2002 (DOY 2002/311), final patch to the BST was outlined. The two MODIS command slots in the BST that are currently switched will be returned to their original locations. At the same time, the command slots will be given a one minor cycle delay. This will result in the command slots having the desired delay period between themselves, and the bus signals that are believed to have caused the occasional problems with MODIS receiving commands.
General Instrument Comments:
FM1 MODIS is in Science Mode. The SVD and NAD are Open, the survival heaters are enabled, and the Black Body is heated to 285 K.
MODIS Telemetry Trends:
The FM1 MODIS instrument telemetry is trending nominally. The most recent radiative cooler telemetry analysis indicates significant temperature margin for the cold focal planes.
Non-MODIS Significant Events:
The EMOS mission status webpage (which includes instrument data loss records) can be found at the following URL. Note that a password is now required to access the EOS mission links webpages. There are directions at the URL below for how to obtain a username/password.
http://jupiter02.gsfc.nasa.gov/links/links.htm
Limited Life Item Status:
SRCA 10W Lamp #1: 209.9 of 500 hours
SRCA 10W Lamp #2: 181.7 of 500 hours
SRCA 10W Lamp #3: 184.5 of 500 hours
SRCA 10W Lamp #4: 57.7 of 500 hours
SRCA 1W Lamp #1: 501.0 of 5000 hours
SRCA 1W Lamp #2: 269.8 of 5000 hours
Solar Diffuser Door: 1870 of 3022 Movements
Nadir Aperture Door: 1053 of 1316 Movements
Space View Door: 632 of 1316 Movements