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MODIS IOT Weekly Report
Mission Operations Days: 2002/355 through 2002/361
December 20, 2002 20:00:00 GMT to December 26, 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 (Cross Strapped with FR B) |
||
| Component | State(s) | Comment |
|---|---|---|
| Blackbody | A On (290 K); B Off | Nominal Science Mode |
| Calibration Electronics | A On; B Off | Nominal Science Mode |
| Control Processor | A On; B Off | Nominal Science Mode |
| Nadir Door | Unlatched, Open | Nominal Science Mode |
| Space View Door | Unlatched, Open | Nominal Science Mode |
| Solar Diffuser Door | Unlatched, Closed | Nominal Science Mode |
| FDDI Formatter | A On; B Off | Nominal Science Mode |
| FDDI Port | A On; B Off | Nominal Science Mode |
| FIFO Memory | #1 & #2 On; #3 & #4 Off | Nominal Science Mode |
| Format Processor | A Off; B On | Nominal Science Mode |
| Power Supplies | #1 On, #2 Off | Nominal Science Mode |
| PV VIS FPA | A On; B Off | Nominal Science Mode |
| PV NIR FPA | A On; B Off | Nominal Science Mode |
| PV SMIR FPA | A On; B Off | Nominal Science Mode |
| PV LWIR FPA | A On; B Off | Nominal Science Mode |
| PC LWIR FPA | A On; B Off | Nominal Science Mode |
| RC Outgas Heaters | All Off (CS, IS, OS) | Nominal Science Mode |
| RC LWIR FPA Heater | On (83 K) | Nominal Science Mode |
| RC SMIR FPA Heater | Off | Nominal Science Mode |
| Scan Assembly | A On; B Off | Nominal Science Mode |
| SDSM | Off | Nominal Science Mode |
| SRCA | Off | Nominal Science Mode |
| PS1 Survival Heater | Enabled | Nominal Science Mode |
| PS2 Survival Heater | Enabled | Nominal Science Mode |
| Timing Generator | A On; B Off | Nominal Science Mode |
| Flight Software | Rev BD + 9 sets of patches
| Nominal Science Mode |
| Inhibit Ids Set | none | Nominal Science Mode |
| TMON 66 | Disabled | Nominal Science Mode |
| TMON 67 | Disabled | Nominal Science Mode |
| TMON 68 | Enabled | Nominal Science Mode |
| TMON 69 | Disabled | Nominal Science Mode |
This Week’s Completed MODIS Activities:
Saturday, December 21, 2002None
Sunday, December 22, 2002None
Monday, December 23, 2002None
Tuesday, December 24, 2002None
Wednesday, December 25, 2002
Terra Roll Maneuver for MODIS Lunar Calibration (-3.3484 degrees)
2002/358 06:10:00 Terra FOT commands the spacecraft to Low Fidelity pointing mode
2002/358 06:19:13 ATC Formatter to Night Rate moved 03:23 earlier
2002/358 06:50:08-06:56:54 ATC MOD_OA08_ROLL_MAN.3
Lunar Calibration (command details listed below)
2002/358 06:50:08 ATC Formatter set to Day Rate
2002/358 06:50:10 Formatter ABNORMAL Science Data Flag Set
2002/358 06:50:12 Formatter PC DC Restore Turned OFF
2002/358 06:50:14 Formatter PV DC Restore Turned OFF
2002/358 06:50:16 Formatter Encoder Delta To -3072 (Earth View Centered on Space View Port)
2002/358 06:50:16-06:56:46 Data Collection
2002/358 06:56:46 Formatter Encoder Delta To 0 (Earth View Centered on Earth View Port)
2002/358 06:56:48 Formatter PV DC Restore Turned ON
2002/358 06:56:50 Formatter PC DC Restore Turned ON
2002/358 06:56:52 Formatter NORMAL Science Data Flag Set
2002/358 06:56:54 Formatter set to Night Rate
2002/358 07:15:24 ATC Formatter to Day Rate moved 03:23 later
2002/358 07:20:00 Terra FOT commands the spacecraft to High Fidelity pointing mode
2002/359 20:55:38-21:08:49 ATC MOD_OA16_SD_SCREEN_FXD_SUN_A.1
OA16: SD/SDSM Screened with SDSM Fixed At Sun View - A Side
2002/359 21:47:17-22:20:50 ATC MOD_OA19_SRCA_FULL_RAD_A.3
OA19: SRCA Full Radiometric - A Side
2002/359 22:34:31-22:47:42 ATC MOD_OA15_SD_OPEN_FIXED_SD_A.1
OA15: SD/SDSM Screened with SDSM Fixed At Sun View - A Side
2002/359 23:33:23-23:35:54 ATC MOD_OA27_PV_ECAL.3
OA27: PV ECAL
None
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Two new SRCA calibrations will be performed in the near future; one of these new activities will use the
“backup” lamps in the SRCA Spherical Integrating Source (SIS) for the first time on orbit.
Maneuvers:
An additional set of 2 days of six yaw maneuvers each day to facilitate SD/SDSM “Screened” calibrations is
being scheduled for January 15-16, 2002.
The Terra Deep Space Calibration Maneuver is still postponed.
MODIS Anomalies:
None
General Instrument Comments:
MODIS is in Science Mode, using all A-side components, but cross-strapped to Formatter B, with the blackbody maintained at 290K.
MODIS Telemetry Trends:
Nominal telemetry tracking is taking place. A slight increase in the radiative cooler intermediate stage
temperature has been observed along with a decrease in the focal plane heater power usage. These telemetry
points will be closely monitored for additional changes over the next several weeks.
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 web pages. There are directions at
the URL below for how to obtain a username/password.
Limited Life Item Status:
Note: The lamp hours and door uses have been recomputed based on a detailed review of early on-orbit
activities. Some values have changed slightly.
SRCA 10W Lamp #1: 205.0 of 500 hours
SRCA 10W Lamp #2: 155.5 of 500 hours
SRCA 10W Lamp #3: 164.7 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 560.7 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 2049 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 17:36:11 EDT
