MODIS IOT Terra Weekly Report
Mission Operations Days: 2016/044 through 2016/050
February 13, 2016 00:00:00 GMT to February 19, 2016 23:59:59 GMT
Terra Spacecraft and MODIS Instrument Status:
| AM-1 "Terra" is in Safe Mode PFM MODIS is in Safe Mode (PS1, CPA, and TG1 are Powered and Cross Strapped with FR B) |
||
|---|---|---|
| Component | State(s) | Comment |
| Blackbody | A Off; B Off | Safe Mode |
| Calibration Electronics | A Off; B Off | Safe Mode |
| Control Processor | A On; B Off | Safe Mode |
| Nadir Door | Unlatched, Closed | Safe Mode |
| Space View Door | Unlatched, Closed | Safe Mode |
| Solar Diffuser Door | Unlatched, Screened | Permanent Configuration |
| FDDI Formatter | A Off; B Off | Safe Mode |
| FDDI Port | A Off; B Off | Safe Mode |
| FIFO Memory | #1 & #2 Off; #3 & #4 Off | Safe Mode |
| Format Processor | A Off; B On | Safe Mode |
| Power Supplies | #1 On, #2 Off | Safe Mode |
| PV VIS FPA | A Off; B Off | Safe Mode |
| PV NIR FPA | A Off; B Off | Safe Mode |
| PV SMIR FPA | A Off; B Off | Safe Mode |
| PV LWIR FPA | A Off; B Off | Safe Mode |
| PC LWIR FPA | A Off; B Off | Safe Mode |
| RC Outgas Heaters | All 3 (CS, IS, OS) Off | Safe Mode |
| RC LWIR FPA Heater | Off (not controlling) | Safe Mode |
| RC SMIR FPA Heater | Off | Safe Mode |
| Scan Assembly | A Off; B Off | Safe Mode |
| SDSM | Off | Safe Mode |
| SRCA | Off | Safe Mode |
| PS1 Survival Heater | Enabled | Safe Mode |
| PS2 Survival Heater | Enabled | Safe Mode |
| Timing Generator | A On; B Off | Safe Mode |
| Flight Software | Rev BD + 11 sets of patches
|
Safe Mode |
| Inhibit Ids Set | 32, 33, 34, 54, 58 | Safe Mode |
| TMON 66 | Disabled | Safe Mode |
| TMON 67 | Disabled | Safe Mode |
| TMON 68 | Enabled | Safe Mode |
| TMON 69 | Disabled | Safe Mode |
This Week’s Completed MODIS Activities:
Saturday, February 13, 2016
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None
Sunday, February 14, 2016
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None
Monday, February 15, 2016
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None
Tuesday, February 16, 2016
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None
Wednesday, February 17, 2016
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None
Thursday, February 18, 2016
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2016/049 14:33:17 Terra S/C enters Safe Mode during IAM #43. MODIS was autonomously transitioned to Safe Mode by Terra at 14:33:30.
Friday, February 19, 2016
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None
This Week's Scheduled MODIS Activities Not Completed:
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None
This Month's Upcoming MODIS Events:
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February's routine activities include a SRCA_Spatial on 2016/039, a SDSM_Screened on 2016/040, a SRCA_Radiometric on 2016/053, and a Lunar Roll on 2016/058.
Non-routine activities include a Lunar Roll on 2016/028, IAM #43 on 2016/049, and IAM #44 on 2016/056
Thursday, February 25, 2016
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2016/056 21:29:56-21:38:44 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
Friday, February 26, 2016
---
2016/057 15:37:33-15:46:21 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
2016/057 22:13:03-22:21:51 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
Maneuvers:
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Terra Lunar Roll took place on 2016/028.
Terra DMU #95 took place on 2015/351.
Terra IAM #43 will take place on 2016/049.
MODIS Anomalies:
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MODIS was sent to safe mode on 2016/049 autonomously by the Terra S/C is it had entered safe mode. SVD and Nadir Doors are closed and no science data is being collected.
General Instrument Comments:
MODIS is in Safe Mode, using all A-side components, but cross-strapped to Formatter B. All subsystems are powered off except for the Power Supply 1, Control Processor A, Timing Generator A, and Formatter B. The Solar Diffuser Door remains at the Screened position. The Space View Door and Nadir Aperture Door were closed as part of the Safe Mode transition.
MODIS Telemetry Trends:
Nominal telemetry trending is ongoing.
Non-MODIS Significant Events:
Terra Spacecraft Earth Point Safe-Hold
On February 18, 2016 (2016/049) the Terra FOT were executing IAM #43. During the execution of the IAM, the spacecraft slewed out to +89.8 degrees which is the opposite direction of the planned slew, -89.8 degrees. Upon verifying that the spacecraft slewed in the opposite direction than planned, the FOT attempted to prevent the burn and slew back. The Fault Detection Isolation & Response (FDIR) transitioned the S/C into Earth Point Safe-Hold (transfer to ACE-A) with thruster control at 049/14:33:17. After normal earth pointing attitude was achieved, control was switched to wheels.
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: 359.4 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: 130.9 of 500 hours
SRCA 1W Lamp #1: 587.6 of 4000 hours
SRCA 1W Lamp #2: 304.6 of 4000 hours
Solar Diffuser Door: 2148 of 3022 Movements
Nadir Aperture Door: 541 of 1316 Movements
Space View Door: 444 of 1316 Movements