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am1weekly_2004-045_2004-051

Mission Operations Days: 2004/045 to 2004/051
February 14, 2004 00:00:00 GMT to February 20, 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)
ComponentState(s)Comment
BlackbodyA On (290K); B OffNominal Science Mode
Calibration ElectronicsA On; B OffNominal Science Mode
Control ProcessorA On; B OffNominal Science Mode
Nadir DoorUnlatched, OpenNominal Science Mode
Space View DoorUnlatched, OpenNominal Science Mode
Solar Diffuser DoorUnlatched, ScreenedPermanent Configuration
FDDI FormatterA On; B OffNominal Science Mode
FDDI PortA On; B OffNominal Science Mode
FIFO Memory#1 & #2 On; #3 & #4 OffNominal Science Mode
Format ProcessorA Off; B OnNominal Science Mode
Power Supplies#1 On, #2 OffNominal Science Mode
PV VIS FPAA On; B OffNominal Science Mode
PV NIR FPAA On; B OffNominal Science Mode
PV SMIR FPAA On; B OffNominal Science Mode
PV LWIR FPAA On; B OffNominal Science Mode
PC LWIR FPAA On; B OffNominal Science Mode
RC Outgas HeatersAll 3 (CS, IS, OS) OffNominal Science Mode
RC LWIR FPA HeaterOn (83K)Nominal Science Mode
RC SMIR FPA HeaterOffNominal Science Mode
Scan AssemblyA On; B OffNominal Science Mode
SDSMOffNominal Science Mode
SRCAOffNominal Science Mode
PS1 Survival HeaterEnabledNominal Science Mode
PS2 Survival HeaterEnabledNominal Science Mode
Timing GeneratorA On; B OffNominal Science Mode
Flight SoftwareRev BD + 11 sets of patches
  • CP07 to Survival Mode - No SDD to closed command (1 patch)
  • CP07 to Safe Mode - No FR OFF Command (1 patch)
  • CP07 to Safe Mode - No SDD to closed command (1 patch)
  • CP07 to Science Mode - Turn on FRB instead of FRA (1 patch)
  • CP07 to Outgas and Science Mode - Turn on FRB instead of FRA (1 patch)
  • FR Error Counting and Statistics (2 patches)
  • FR 1000ms time code patches (3 patches)
  • FR Band 5 Gain Change (20 commands)
  • FR BB Ideal Output Values (1 patch)
  • FR A EEPROM KME Fast 1 word patch (1 patch)
  • FR B EEPROM KME Fast 1 word patch (1 patch)
Nominal Science Mode
Inhibit Ids SetnoneNominal Science Mode
TMON 66DisabledNominal Science Mode
TMON 67DisabledNominal Science Mode
TMON 68EnabledNominal Science Mode
TMON 69DisabledNominal Science Mode

This Week’s Completed MODIS Activities:

Saturday, February 14, 2004

None

Sunday, February 15, 2004

None

Monday, February 16, 2004

None

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)

Thursday, February 19, 2004

None

Friday, February 20, 2004

None

This Week’s Scheduled MODIS Activities Not Completed:

This activity was performed by MODIS, however, the spacecraft SFE-A was down, and so no data was collected. It has been rescheduled for the upcoming week.

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)

Upcoming MODIS Events:

Upcoming February calibrations include a weekly SDSM SCREENED.

Wednesday, February 25, 2004

2004/056 20:42:43-21:22:10 ATC MOD_OA03_DAY_RATE.2 OA-03: Formatter to Day Rate
2004/056 21:22:10-21:40:00 ATC MOD_OA04_NIGHT_RATE.1 OA-04: Formatter to Night Rate (10 min before groundtrack night)
2004/056 21:40:00-22:00:00 ATC MOD_OA03_DAY_RATE.2 OA-03: Formatter to Day Rate (night ground track)
2004/056 22:00:00-22:31:36 ATC MOD_OA04_NIGHT_RATE.1 OA-04: Formatter to Night Rate (return to normal night rate)
2004/056 22:31:36-23:11:02 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.

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 SFE-A Shutdown

Overview:

On day 2004/049 at 14:31:57, the Science Formatting Equipment using A-side electronics (SFE-A) onboard the Terra spacecraft autonomously shutdown due to a TMON 16 trip while passing through the SAA. The SFE-A shutdown had no impact on MODIS operations aside from not allowing gathered data to be processed or recorded by the SSR. However, MODIS still functioned nominally. The SFE-A was successfully turned back on and Science Record was enabled at 050/16:11:38. Total data loss was from 049/14:31:57-050/16:11:38.

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: 226.1 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