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MODIS IOT Terra Weekly Report
Mission Operations Days: 2003/074 through 2003/080
March 14, 2003 20:00:00 GMT to March 21, 2003 20:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
|
AM-1 "Terra" is in Normal Mode PFM MODIS is in A-Side Nominal Science Mode (Cross Strapped with FR B) |
||
| Component | State(s) | Comment |
|---|---|---|
| Blackbody | A On (290K); 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 3 (CS, IS, OS) Off | Nominal Science Mode |
| RC LWIR FPA Heater | On (83K) | 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, March 15, 2003None
Sunday, March 16, 2003None
Monday, March 17, 2003None
Tuesday, March 18, 2003None
Wednesday, March 19, 2003None
Thursday, March 20, 2003None
Friday, March 21, 2003None
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Saturday, March 22, 2003MODIS Lunar Calibration
2003/081 07:00:51 ATC MOD_OA04_NIGHT_RATE.1
Formatter to Night rate moved 03:23 earlier to balance extra lunar
calibration day rate data.
2003/081 07:09:42-07:16:28 ATC MOD_OA08_ROLL_MAN.3
OA08: Lunar calibration during spacecraft roll maneuver
2003/081 07:57:03 ATC MOD_OA03_NIGHT_RATE.2
Formatter to Day rate moved 03:23 later to balance extra lunar calibration
day rate data.
2003/084 16:31:57 ATC MOD_OA16_SD_SCREEN_FXD_SUN_A.1
OA16: SD/SDSM Screened with SDSM Fixed At Sun View - A Side
2003/084 18:10:50 ATC MOD_OA15_SD_OPEN_FIXED_SD_A.1
OA15: SD/SDSM Screened with SDSM Fixed At SD View - A Side
March calibrations for the PFM MODIS instrument include a biweekly SD calibration.
The following activities have been scheduled for the upcoming Terra Deep Space Calibration maneuver and the backup maneuver. If the first maneuver is successful, the backup activities will be unscheduled.
Wednesday, March 26, 2003Terra Deep Space Calibration (DSC) Maneuver (no Lunar View)
2003/085 14:04:05 FR to DAY (NADIR to DAY)
2003/085 14:17:05 FR to NIGHT (NADIR to DAY+00:13:00)
2003/085 14:53:31 FR to DAY (NADIR to NIGHT)
2003/085 15:29:58 FR to NIGHT (NADIR to DAY-00:13:00)
2003/085 15:42:58 FR to DAY (NADIR to DAY)
Maneuvers:
The next Terra MODIS lunar calibration is being planned for March 22, 2003 with a roll angle of -20.0000 degrees and data collection from 07:09:50 to 07:16:20 GMT. The optimal roll angle is actually -20.6 degrees. However, the moon will still be in the field of view of the space view port using the maximum allowed roll angle of –20.0 degrees.
The Terra Deep Space Calibration Maneuvers are now being planned for March 26, 2003 (without the moon in the instruments fields of view) and April 14, 2003 (with the moon in the spacecraft orbit plane). The March 26, 2003 maneuver will start at 2003/085-14:53:32 GMT and will be completed at 15:29:26. The backup date scheduled (in the event the maneuver has to be "waved off") for the maneuver is 2003/088 15:37:07. The April 14, 2003 maneuver will start at 2003/104-21:57:56 GMT and will be completed at 22:33:50. The time of the maneuvers may fluctuate as a result of orbit changes.
For approximately 36 minutes prior to the maneuver, the MODIS instrument will be configured to collect data at the formatter Night rate. During the maneuver, data collection will be at the formatter Day rate. Following the maneuver, the high-rate instrument data feeds (including MODIS’) to the Terra solid state recorder will be disabled until the maneuver data are successfully captured on the ground through two different downlink opportunities.
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 trending is ongoing.
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.
http://jupiter02.gsfc.nasa.gov/links/links.htmLimited Life Item Status:
SRCA 10W Lamp #1: 208.9 of 500 hours
SRCA 10W Lamp #2: 157.7 of 500 hours
SRCA 10W Lamp #3: 166.9 of 500 hours
SRCA 10W Lamp #4: 61.9 of 500 hours
SRCA 1W Lamp #1: 561.5 of 4000 hours
SRCA 1W Lamp #2: 276.5 of 4000 hours
Solar Diffuser Door: 2121 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 17:36:21 EDT
