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Am1weekly_2025_214_2025_220

MODIS IOT Terra Weekly Report
Mission Operations Days: 2025/214 through 2025/220
August 2, 2025 00:00:00 GMT to August 8, 2025 23:59:59 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 (285K); 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 (3 patches)
  • 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, August 2, 2025
--
None
 
Sunday, August 3, 2025
--
2025/215 20:58:53 - 20:59:22 ATC MOD_SRCA_9_8_2_SETUP_CC.1
SRCA setup activity using 10W lamps 1 and 4, and 1W lamp 5, in constant current feedback mode
 
2025/215 21:01:53 - 21:33:18 ATC MOD_OA19_SRCA_FULL_RAD.1
OA-19: SRCA Full Radiometric Calibration.
 
S/C Night 21:09:30 - 21:40:42
Data Collect 21:17:54 - 21:33:17
 
Monday, August 4, 2025
--
None
 
Tuesday, August 5, 2025
--
2025/217 21:21:50-21:30:38 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screen side A, no door movement.
 
Wednesday, August 6, 2025
--
2025/218 21:00:00 ATC MOD_OA26_BB_270K_A.2 BB Temp Set to 270K for CP A Coefficients
 
Thursday, August 7,  2025
--
2025/219 15:00:00 ATC MOD_OA26_BB_280K_A.2 BB Temp Set to 280K for CP A Coefficients
2025/219 19:00:00 ATC MOD_OA26_BB_285K_A.2 BB Temp Set to 285K for CP A Coefficients
2025/219 22:00:00 ATC MOD_OA26_BB_290K_A.2 BB Temp Set to 290K for CP A Coefficients
 
Friday, August 8, 2025
--
2025/220 02:00:00 ATC MOD_OA26_BB_315K_A.2 BB Temp Set to 315K for CP A Coefficients
2025/220 02:00:30 ATC MOD_OA26_BB_DCYCLE_FULL.1 Set blackbody heater duty cycle to FULL
2025/220 05:00:00 ATC MOD_OA26_BB_270K_A.2 BB Temp Set to 270K for CP A Coefficients
2025/220 05:00:30 ATC MOD_OA26_BB_DCYCLE_THIRD.1 Set blackbody heater duty cycle to THIRD
 
This Week's Scheduled MODIS Activities Not Completed:
---
None

This Month's MODIS Events:
---
August's routine activities include regular SD/SDSM calibrations (2025/217, and 225), a Blackbody Warm Up/Cool Down (2025/218), a Lunar Roll Calibration (2025/223, and 224), and a SCRA Radiometric Calibration (2025/215).
 
Next Week's MODIS Events:
--- 
Saturday, August 9, 2025
--
2025/221 02:00:00 ATC MOD_OA26_BB_285K_A.2 BB Temp Set to 285K for CP A Coefficients
 
Monday, August 11, 2025
--
Lunar Roll Maneuver (-15.1068 degrees)
2025/223 13:06:40 ATC MOD_OA04_NIGHT_RATE.1 (1:53 early)
2025/223 13:29:53-13:33:39 ATC MOD_OA08_ROLL_MAN.3
2025/223 13:59:37 ATC MOD_OA03_DAY_RATE.2 (1:53 late)
 
Tuesday, August 12, 2025
--
Lunar Calibration
2025/224 15:24:59 ATC MOD_OA04_NIGHT_RATE.1 (1:53 early)
2025/224 15:47:31-15:51:17 ATC MOD_OA08_ROLL_MAN.3
2025/224 16:17:56 ATC MOD_OA03_DAY_RATE.2 (1:53 late)
 
Wednesday, August 13, 2025
--
2025/225 20:04:31-20:13:19 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screen side A, no door movement.
 
Maneuvers:
---
The Terra Lunar Roll Maneuver will take place on Monday, August 11, 2025 (2025/223).
 
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 nominally maintained at 285K and the Solar Diffuser Door at the Screened position.

Note that the BlackBody will be maintained at 285K.

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.
 

Limited Life Item Status:

SRCA 10W Lamp #1: 406.3 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: 155.3 of 500 hours

SRCA 1W Lamp #1: 598.7 of 4000 hours
SRCA 1W Lamp #2: 333.5 of 4000 hours

Solar Diffuser Door:    2148 of 3022 Movements
Nadir Aperture Door:   544 of 1316 Movements
Space View Door:          449 of 1316 Movements
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