Mission Operations Days: 2004/038 to 2004/044
February 07, 2004 00:00:00 GMT to February 13, 2004 00:00:00 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) |
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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
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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, February 7, 2004
None
Sunday, February 8, 2004
None
Monday, February 9, 2004
None
Tuesday, February 10, 2004
2004/041 18:54:49-18:57:20 ATC MOD_OA27_PV_ECAL.3 OA-27: PV ECAL
Lunar Roll Maneuver (-7.5597 degree roll)
2004/041 19:47:00 RT FOT places Terra in Low Fidelity Pointing Mode
2004/041 20:34:52 ATC MOD_OA03_FR_NIGHT_RATE (03:23 early)
2004/041 20:42:59-20:49:48 ATC MOD_OA08_ROLL_MAN PFM Lunar Calibration (-7.5597 roll)
2004/041 21:19:20-21:28:08 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA-16: SD/SDSM screened side A, no door movement.
2004/041 21:30:22 RT FOT places Terra in High Fidelity Pointing Mode
2004/041 21:31:04 ATC MOD_OA03_FR_DAY_RATE (03:23 late)
2004/041 22:15:00-22:15:31 ATC MOD_SRCA_NOMINAL_SETUP.4 Setup of nominal lamp configuration for SRCA calibration
2004/041 22:16:18-22:51:28 ATC MOD_OA19_SRCA_FULL_RAD_A.6 OA-19: SRCA Full Radiometric Calibration Data collection from 22:32:12-22:51:28
Wednesday, February 11, 2004
None
Thursday, February 12, 2004
None
Friday, February 13, 2004
None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Upcoming February calibrations include weekly SDSM SCREENED, SRCA Full Radiometric, SRCA 10W Radiometric, PV Ecal, and Lunar Calibration. A special request has also been made for a 20 minute Formatter Day Rate over Groundtrack Night collection along the Southern African Coast.
Tuesday, February 17, 2004
2004/048 21:24:33-21:33:21 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA-16: SD/SDSM screened side A, no door movement
2004/048 22:28:00-22:28:30 ATC MOD_SRCA_NOMINAL_SETUP.4 Sets up nominal SRCA lamp configuration
2004/048 22:28:53-22:49:48 ATC MOD_OA20_SRCA_10W_RAD_A_Base.2 OA-20: SRCA 10W Continuous Radiometric - A Side, Using Lamp #1 Data Collect Centered on S/C Night (22:44:47-22:49:48)
Wednesday, February 18, 2004
20 minute Formatter Day Rate over Groundtrack Night (Viewing South-Western African Coast)
2004/049 21:16:49 ATC MOD_OA04_NIGHT_RATE.1 OA-04: Formatter to Night Rate (10 min before groundtrack night)
2004/049 21:42:00 ATC MOD_OA03_DAY_RATE.2 OA-03: Formatter to Day Rate (night ground track)
2004/049 22:02:00 ATC MOD_OA04_NIGHT_RATE.1 OA-04: Formatter to Night Rate (return to normal night rate)
2004/049 22:26:15 ATC MOD_OA03_DAY_RATE.2 OA-03: Formatter to Day Rate (10 min after groundtrack day)
Maneuvers:
The next Lunar Calibration will occur on DOY 2004/070 (March 10, 2004), with a data collect time from 23:27:40 to 23:34:10. The necessary roll angle is -19.4329 degrees. The MODIS data will be adjusted for Day Rate and Sector Rotation as is standard for a Lunar Calibration.
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.
Terra SSR Anomaly:
Although not directly the result of a MODIS problem, the most recent Printed Wire Assembly (PWA) failures in the Terra Solid State Recorder (SSR) do affect MODIS data. See the Non-MODIS Significant Events section below for more details.
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.
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 reports.
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: 225.9 of 500 hours
SRCA 10W Lamp #2: 165.3 of 500 hours
SRCA 10W Lamp #3: 174.5 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours
SRCA 1W Lamp #1: 565.2 of 4000 hours
SRCA 1W Lamp #2: 276.7 of 4000 hours
Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 538 of 1316 Movements
Space View Door: 441 of 1316 Movements