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pm1weekly_2002-313_2002-319

Mission Operations Days: 2002/313 to 2002/319
November 09, 2002 00:00:00 GMT to November 15, 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 9, 2002

None

Sunday, November 10, 2002

None

Monday, November 11, 2002

2002/315 13:19:19-13:33:17 MCL MOD_OA16_SDSM_SCREEN.2 OA16: SDSM Calibration with SD Screened - B Side
2002/315 14:11:17-14:11:33 MCL MOD_SRCA_SETUP.2 SRCA Turn On and Setup - B Side
2002/315 14:11:47-14:45:21 MCL MOD_OA19_SRCA_FULL_RAD.1 OA19: SRCA Full Radiometric
2002/315 14:58:12-15:12:10 MCL MOD_OA15_SDSM_OPEN.1 OA15: SDSM Calibration with SD Open - B Side

Tuesday, November 12, 2002

2002/316 13:15:29-13:15:45 MCL MOD_SRCA_SETUP.2 SRCA Turn On and Setup - B Side
2002/316 13:15:59-14:13:29 MCL MOD_OA23_SRCA_FULL_SPAT.1 OA23: SRCA Full Spatial

2002/316 AQUA Spacecraft Drag Makeup Maneuver

Wednesday, November 13, 2002

None

Thursday, November 14, 2002

None

Friday, November 15, 2002

Lunar Roll Maneuver (-9.8076 degree roll)

Night time ground track recorded in Formatter Day Rate:
2002/319 03:11:36 MCL Single command for nominal formatter day rate MOD_OA03_FR_DAY_RATE.1
2002/319 03:57:40 MCL Single command to move formatter night rate ahead by 3:23 MOD_OA04_FR_NIGHT_RATE.2

2002/319 04:29:21 – 04:36:56 Spacecraft slew to -9.8076 degrees

2002/319 04:38:48 - 04:45:34 MCL Lunar calibration via roll maneuver MOD_OA08_ROLL_MAN.1
(command details listed below)
2002/319 04:38:48 MCL Set formatter to Day rate
2002/319 04:38:50 MCL Set SCIABNORM flag to ABNORM
2002/319 04:38:52 MCL Disable PC DC Restore
2002/319 04:38:54 MCL Disable PV DC Restore
2002/319 04:38:56 MCL Sector Rotation to -3072
2002/319 04:38:56 – 04:45:26 Lunar calibration data collection
2002/319 04:45:26 MCL Sector Rotation to zero
2002/319 04:45:28 MCL Enable PC DC Restore
2002/319 04:45:30 MCL Enable PV DC Restore
2002/319 04:45:32 MCL Set SCIABNORM flag to NORM
2002/319 04:45:34 MCL Set formatter to Night rate
2002/200 04:53:52 MCL Single command to move formatter day rate later by 3:23 MOD_OA03_FR_DAY_RATE.1

2002/319 04:45:26 – 04:53:01 Spacecraft slew back

This Week’s Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

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)

Additional calibrations planned for November:

Weekly SD/SDSM Calibrations

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: 1864 of 3022 Movements
Nadir Aperture Door: 1053 of 1316 Movements
Space View Door: 632 of 1316 Movements