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MODIS IOT Terra Weekly Report
Mission Operations Days: 2003/165 through 2003/171
June 13, 2003 20:00:00 GMT to June 20, 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 | Solar Diffuser Screen Anomaly. Under Investigation |
| 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, June 14, 2003None
Sunday, June 15, 2003None
Monday, June 16, 2003None
Tuesday, June 17, 2003None
Wednesday, June 18th, 2003MODIS Lunar Calibration/Roll
2003/169 13:32:46 MOD_OA03_FR_DAY_RATE
2003/169 14:18:47 MOD_OA03_FR_NIGHT_RATE (03:23 early)
2003/169 14:30:55 - 14:37:41 MOD_OA08_ROLL_MAN
2003/169 15:15:02 MOD_OA03_FR_DAY_RATE (03:23 late)
2003/169 16:01:03 MOD_OA03_FR_NIGHT_RATE
2003/170 13:17:46-13:51:19 ATC MOD_OA19_SRCA_FULL_RAD_A.3 OA-19: SRCA Full Radiometric - A Side
Friday, June 20, 2003None
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
June calibrations for the PFM MODIS instrument will include biweekly SD/SDSM, monthly SRCA Radiometric, and bimonthly PV Ecal calibrations. However, SD/SDSM calibrations are currently on hold pending the resolution of the solar diffuser screen anomaly.
Maneuvers:
The next MODIS lunar calibration will be on July 18, 2003 (doy 199). Roll angle will be –10.3692 degrees, and data collect will be from 03:14:57 – 03:21:27.
MODIS Anomalies:
During the May 6, 2003 (doy 2003/126) Terra Solar Diffuser calibration with the Solar Diffuser Door in the full open position, the telemetry mnemonic, MOD_CR_DR_SDS_OPEN, did not change from NOT_OPEN to OPEN as was expected. A xx6A CP Event Message, "MTR SDD Trigger Not Found", was generated. Further analysis by MCST determined that the screen had indeed remained NOT_OPEN during this calibration, however, dump data analysis by the IOT showed that the drive motor moved through the entire range of the screen from closed to open to closed. Thermal analysis is underway to determine the cause of this anomaly and Terra SDSM calibrations are temporarily on hold.
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: 213.4 of 500 hours
SRCA 10W Lamp #2: 159.5 of 500 hours
SRCA 10W Lamp #3: 168.7 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours
SRCA 1W Lamp #1: 562.0 of 4000 hours
SRCA 1W Lamp #2: 276.7 of 4000 hours
Solar Diffuser Door: 2145 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 17:37:43 EDT
