Mission Operations Days: 2004/017 to 2004/023
January 17, 2004 00:00:00 GMT to January 23, 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, January 17, 2004
None
Sunday, January 18, 2004
None
Monday, January 19, 2004
None
Tuesday, January 20, 1994
2004/020 21:03:03-21:11:51 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA-16: SD/SDSM screened side A, no door movement
2004/020 21:50:00 ATC MOD_SRCA_NOMINAL_SETUP.4 Sets up nominal SRCA lamp configuration
2004/020 21:52:46-22:13:41 ATC MOD_OA20_SRCA_10W_RAD_A_Base.2 OA-20: SRCA 10W Continuous Radiometric - A Side, Using Lamp #1 Data collection is from 22:08:40-22:13:41 (in S/C Night)
Wednesday, January 21, 2004
None
Thursday, January 22, 2004
None
Friday, January 23, 2004
None
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Upcoming January calibrations include weekly SDSM SCREENED and quarterly SRCA Full Spectral.
Tuesday, January 27, 2004
2004/027 21:08:34-21:17:22 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA16: SD/SDSM screened side A, no door movement.
2004/027 23:30:00 ATC MOD_SRCA_NOMINAL_SETUP.4 Sets up nominal A Side SRCA lamp configuration
2004/027 23:34:02-00:25:43 ATC MOD_OA22_SRCA_FULL_SPECT_1A.6 OA-22: SRCA Full Spectral Calibration Part 1 - A Side 30W lamp data collection is from 23:49:56-00:25:42 (in S/C night)
Wednesday, January 28, 2004
2004/028 01:29:46-02:12:36 ATC MOD_OA22_SRCA_FULL_SPECT_2A.5 OA-22: SRCA Full Spectral Calibration Part 2 - A Side 30W lamp data collection is from 01:29:46-02:04:16 (in S/C night)
2004/028 02:50:00 ATC MOD_SRCA_NOMINAL_SETUP.4 Sets up nominal A Side SRCA lamp configuration
2004/028 02:51:47-03:43:05 ATC MOD_OA22_SRCA_FULL_SPECT_3A.6 OA-22: SRCA Full Spectral Calibration Part 3 - A Side 10W lamp data collection is from 03:08:14-03:42:47 (in S/C night)
2004/028 04:44:49-05:30:06 ATC MOD_OA22_SRCA_FULL_SPECT_4A.4 OA-22: SRCA Full Spectral Calibration Part 4 - A Side 10W lamp data collection is from 04:44:49-05:22:49 (in S/C night)
Maneuvers:
The next Lunar Calibration will occur on DOY 2004/041 (February 10, 2004), with a data collect time from 20:43:07 to 20:49:37. The necessary roll angle is -7.5597degrees. 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 the web pages. There are directions at the URL below for how to obtain the username/password.
http://jupiter02.gsfc.nasa.gov/links/links.htm
Limited Life Item Status:
SRCA 10W Lamp #1: 223.4 of 500 hours
SRCA 10W Lamp #2: 164.0 of 500 hours
SRCA 10W Lamp #3: 173.2 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours
SRCA 1W Lamp #1: 565.1 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