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MODIS IOT Terra Weekly Report
Mission Operations Days: 2004/192 through 2004/198
July 9, 2004 20:00:00 GMT to July 16, 2004 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, Screened | Permanent Configuration |
| 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 + 11 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, July 10, 2004None
Sunday, July 11, 2004None
Monday, July 12, 2004None
Tuesday, July 13, 2004None
Wednesday, July 14, 2004None
Thursday, July 15, 2004None
Friday, July 16, 2004None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Calibrations for July will include biweekly SDSM, monthly SRCA Full and 10W Radiometric, bimonthly SRCA Spatial, and quarterly Black Body and SRCA Spectral calibrations.
Tuesday, July 20, 2004
2004/202 20:12:57-20:21:45 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
2004/202 20:50:00-20:50:31 ATC MOD_SRCA_11_3_8_2_SETUP.1
SRCA setup activity using lamp #4 in lieu of lamp #2
2004/202 21:02:12-21:23:07 ATC MOD_OA20_SRCA_10W_RAD_A_Base.2
OA-20: SRCA 10W Continuous Radiometric - A Side, Using Lamp #1
Data Collect from 21:18:06-21:23:07
2004/203 02:00:00 ATC MOD_OA26_BB_270K_A.1
Set blackbody temperature to 270K on the A Side
2004/203 20:00:00 ATC MOD_OA26_BB_280K_A.1
Set blackbody temperature to 280K on the A Side
2004/204 00:00:00 ATC MOD_OA26_BB_285K_A.1
Set blackbody temperature to 285K on the A Side
2004/204 03:00:00 ATC MOD_OA26_BB_290K_A.1
Set blackbody temperature to 290K on the A Side
2004/204 07:00:00 ATC MOD_OA26_BB_315K_A.1
Set blackbody temperature to 315K on the A Side
2004/204 07:00:30 ATC MOD_OA26_BB_DCYCLE_FULL.1
Set blackbody heater duty cycle to FULL
2004/204 10:00:00 ATC MOD_OA26_BB_270K_A.1
Set blackbody temperature to 270K on the A Side
2004/204 10:00:30 ATC MOD_OA26_BB_DCYCLE_THIRD.1
Set blackbody heater duty cycle to THIRD
2004/205 07:00:00 ATC MOD_OA26_BB_290K_A.1
Set blackbody temperature to 290K on the A Side
Maneuvers:
The August Lunar Calibration Roll will be on day 2004/217 (August 4, 2004). Data collect will be from 20:47:37-20:54:07 GMT with a roll angle of -6.0192 degrees.
MODIS Anomalies:
MODIS NAD (Nadir Aperture Door) Anomaly:
Telemetry still indicates that the “NAD Open” (MOD_CR_DR_NAD_OPEN) trigger is set to the “NOT_OPEN” position; however, science data has shown that the NAD is open. The NAD OPEN trigger may yet “pop” to OPEN due to thermal cycling on the trigger, as was seen on 2002/079.
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 and the Solar Diffuser Door at the Screened position.
MODIS Telemetry Trends:
Nominal telemetry trending is ongoing.
The second CP UART Hunt count detected in 2004 was registered on DOY 2004/192 (July 10, 2004). The previous event occurred on DOY 2004/093 (April 2, 2004). These events signify the temporary loss of communication between the CP and FR in MODIS. Each event registered only a single increase of the count signifying the communication break was restored in less than one major cycle (1.024 seconds). There have been no accompanying signs (such as CP or FR Events or Science Data problems) to indicate that there is a problem with either unit.
Non-MODIS Significant Events:
Terra Solid State Recorder Anomaly
Overview:
The SSR Anomaly is still under investigation. MODIS currently is operating with 34 Supersets allotted for its buffer. There are plans in the works for possibly power cycling the SSR to get back PWA's that are in the Bad List, but no date has yet been set. There are no current plans for a change in science data capture rates. For details, see previous report am1weekly_2003-305_2003-311.doc.
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.htm
Limited Life Item Status:
SRCA 10W Lamp #1: 231.3 of 500 hours
SRCA 10W Lamp #2: 168.7 of 500 hours
SRCA 10W Lamp #3: 179.0 of 500 hours
SRCA 10W Lamp #4: 63.6 of 500 hours
SRCA 1W Lamp #1: 566.5 of 4000 hours
SRCA 1W Lamp #2: 276.9 of 4000 hours
Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 538 of 1316 Movements
Space View Door: 441 of 1316 Movements
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Last Update: Friday, 30-Jul-2004 10:00:47 EDT
