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am1weekly_2013-117_2013-123

MODIS IOT Terra Weekly Report

Mission Operations Days: 2013/117 through 2013/123
April 27, 2013 00:00:00 GMT to May 3, 2013 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)
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
  • 10W Lamps - 1, 4 (functional)
  • 10W Lamps - 2, 3 (non-functional)
  • 1W Lamps - 1, 2 (functional)
 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
  • 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 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, April 27, 2013
None
 
Sunday, April 28, 2013
None
 
Monday, April 29, 2012
Lunar Roll Maneuver (-19.6964 degrees)
2013/119 21:29:30 ATC MOD_OA04_FR_NIGHT_RATE.1 (1:48 early)
2013/119 21:39:46-21:43:22 ATC MOD_OA08_ROLL_MAN.3
2013/119 22:22:25 ATC MOD_OA03_FR_DAY_RATE.2 (1:48 late)
 
Tuesday, April 30, 2013 
None
 
Wednesday, May 1, 2013 
None
 
Thursday, May 2, 2013
None
 
Friday, May 3, 2013
None
 
This Week’s Scheduled MODIS Activities Not Completed:
 
None.
 
This Month’s Upcoming MODIS Events:
 
Calibrations for May will include a SRCA Spatial (126), 2 SD/SDSM (127 and 148), SRCA Radiometric (140), BB Warm Up Cool Down (142-144), and a Terra lunar roll (149).
 
Monday, May 6, 2013
2013/126 21:26:45-21:27:14_SRCA_9_8_2_SETUP_CC.1
SRCA setup activity using 10W lamps 1 & 4 and 1W lamp 5 in constant current feedback mode
2013/126 21:29:45-22:18:03 MOD_OA23_SRCA_FULL_SPAT.1
OA-23: SRCA Full Spatial Calibration
Spacecraft Night 21:44:27-22:18:38.
 
Tuesday, May 7, 2013
2013/127 21:22:32-21:31:20 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
 
 
Maneuvers:
 
None.
 
MODIS Anomalies: 
 
None
 
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:
 
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.
 
Following the Inclination Maneuver on DOY 2009/286 (10/13/09), Terra experienced a Hex Bay Battery (BBAT) cell #50 failure and simultaneously (or close to same time) experienced a Battery Heater Control Electronic anomaly which prevents controlling the temperature for 5 of the 9 heater groups within BBAT. Cell #50 has failed and is non-recoverable. Battery temperatures have stabilized and battery cell temperatures are within an acceptable range. Terra has a robust power system with two 54 cell batteries that feed a power control system that maintains a stable 120V spacecraft power bus even if multiple cells fail. At this point in time the Terra Battery Anomaly is not affecting science data collection and all MODIS systems are nominal. There has been little if any impact to operations since the issue began. All operations are nominal.
 
 
Limited Life Item Status:
 
SRCA 10W Lamp #1: 313.0 of 500 hours
SRCA 10W Lamp #2: 172.1 of 500 hours
SRCA 10W Lamp #3: 190.3 of 500 hours
SRCA 10W Lamp #4: 107.6 of 500 hours
 
SRCA 1W Lamp   #1: 587.6 of 4000 hours
SRCA 1W Lamp   #2: 282.0 of 4000 hours
 
Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 540 of 1316 Movements
Space View Door: 443 of 1316 Movements
 
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