MODIS IOT Aqua Weekly Report

Mission Operations Days: 2002/299 to 2002/305
October 26, 2002 00:00:00 GMT to November 2, 2002 00:00:00 GMT

Aqua Spacecraft and MODIS Instrument Status:

This Week’s Completed MODIS Activities:

None

None

2002/301 13:09:00-13:22:58 MCL MOD_OA16_SDSM_SCREEN.2 OA16: SD/SDSM Screened - B-Side
2002/301 14:47:53-15:01:51 MCL MOD_OA15_SDSM_OPEN.1 OA15: SD/SDSM Open - B-Side

None

None

None

None

This Week’s Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

2002/308 13:14:17-13:28:15 MCL OA16: SD/SDSM Screened - B Side (MOD_OA16_SDSM_SCREEN.2)
2002/308 14:53:09-15:07:07 MCL OA15: SD/SDSM Open - B Side (MOD_OA15_SDSM_OPEN.1)

Additional calibrations planned for November:

• Weekly SD/SDSM Calibrations
• Monthly SRCA Full Radiometric
• Bimonthly SRCA Full Spatial

A PV ECAL has been requested for around DOY 2002/325. It was not originally planned as part of the Bimonthly schedule, but will be performed.

Maneuvers:

The next Aqua MODIS lunar calibration is planned for November 15, 2002, with data collection from 04:38:56 to 04:45:26 GMT and a roll angle of -9.8076 degrees.

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.

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.

Limited Life Item Status:

SRCA 10W Lamp #1: 209.5 of 500 hours
SRCA 10W Lamp #2: 181.2 of 500 hours
SRCA 10W Lamp #3: 184.0 of 500 hours
SRCA 10W Lamp #4: 57.7 of 500 hours

SRCA 1W Lamp #1: 500.8 of 5000 hours
SRCA 1W Lamp #2: 269.8 of 5000 hours

Solar Diffuser Door: 1852 of 3022 Movements
Nadir Aperture Door: 1053 of 1316 Movements
Space View Door: 632 of 1316 Movements

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Email the MCST Helpdesk to ask a question about Level 1B usage, algorithms or software.

Last Update: Friday, 18-Apr-2003 14:29:27 EDT