MODIS IOT Terra Weekly Report
Mission Operations Days: 2016/051 through 2016/057
February 20, 2016 00:00:00 GMT to February 26, 2016 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) |
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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
|
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, February 20, 2016
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None
Sunday, February 21, 2016
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None
Monday, February 22, 2016
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None
Tuesday, February 23, 2016
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2016/054 16:41:00-16:43:20 Real-Time MOD_STBY_TXTN('A')
Transitions MODIS to A-Side Standby Mode
2016/054 17:10:52-17:11:56 Real-Time MOD_MEM_DUMP('motor_pos_when_hit',12,0,0,1,1) Dumps Door Position Table
2016/054 17:12:48-17:15:09 Real-Time MOD_STEP_DOOR('SVD',750,'OUT')
Moves Space-View Door out 750 steps
2016/054 17:15:34-17:17:51 Real-Time MOD_SVD_TO_OG
Moves Space-View Door to Outgas Position (275 steps)
2016/054 17:33:51-17:34:43 Real-Time MOD_OG_HTR('ON','OFF','OFF')
Turns on Cold-Stage Outgas Heater
2016/054 17:42:22-17:43:16 Real-Time MOD_OG_HTR('ON','ON','OFF')
Turns on Cold-Stage and Inner-Stage Outgas Heaters
2016/054 18:50:47-18:51:35 Real-Time MOD_OG_HTR('ON','ON','ON')
Turns on Cold-Stage, Inner-Stage and Outer-Stage Outgas Heaters
Wednesday, February 24, 2016
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2016/055 19:18:23-19:19:19 Real-Time MOD_OG_HTR('OFF','OFF','OFF')
Turns off Cold-Stage, Inner-Stage and Outer-Stage Outgas Heaters
Total Outgas Duration: 25:44:57
2016/055 19:20:06-19:22:52 Real-Time MOD_SVD_TO_OPEN
Opens Space-View Door
2016/055 19:23:30-19:23:57 Real-Time MOD_MEM_DUMP('motor_pos_when_hit',12,0,0,1,1) Dumps Door Position Table
2016/055 19:24:35-19:26:34 Real-Time MOD_SCI_TXTN('A')
Transitions MODIS to A-side Science Mode
2016/055 19:31:43-19:32:11 Real-Time FS1_EXEC_INHIB_ID_RST(32)
Clears Inhibit #32
2016/055 19:32:22-19:32:52 Real-Time FS1_EXEC_INHIB_ID_RST(33)
Clears Inhibit #33
2016/055 19:33:03-19:33:22 Real-Time FS1_EXEC_INHIB_ID_RST(34)
Clears Inhibit #34
2016/055 19:33:35-19:34:00 Real-Time FS1_EXEC_INHIB_ID_RST(54)
Clears Inhibit #54
2016/055 19:34:13-19:34:38 Real-Time FS1_EXEC_INHIB_ID_RST(58)
Clears Inhibit #58
2016/055 19:55:13-19:56:21 Real-Time MOD_BB_ON('A','A')
Turns on A-Side Blackbody
2016/055 19:56:42-19:57:21 Real-Time MOD_SET_BB_TEMP(1284)
Sets Blackbody to 290K
2016/055 19:57:33-20:01:32 Real-Time MOD_NAD_TO_OPEN
Opens Nadir Door
2016/055 20:01:51-20:02:21 Real-Time MOD_MEM_DUMP('motor_pos_when_hit',12,0,0,1,1) Dumps Door Position Table
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
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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.
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
Monday, February 29, 2016
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2016/060 21:04:40-21:13:28 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
Tuesday, March 01, 2016
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2016/061 20:08:54-20:17:42 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
Wednesday, March 02, 2016
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2016/062 15:55:24-16:04:12 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
2016/062 21:00:00 ATC MOD_OA26_BB_270K_A.2
BB Temp Set to 270K for CP A Coefficients
Thursday, March 03, 2016
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2016/063 15:00:00 ATC MOD_OA26_BB_280K_A.2
BB Temp Set to 280K for CP A Coefficients
2016/063 19:00:00 ATC MOD_OA26_BB_285K_A.2
BB Temp Set to 285K for CP A Coefficients
2016/063 22:00:00 ATC MOD_OA26_BB_290K_A.2
BB Temp Set to 290K for CP A Coefficients
Friday, March 04, 2016
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2016/064 02:00:00 ATC MOD_OA26_BB_315K_A.2
BB Temp Set to 315K for CP A Coefficients
2016/064 02:00:30 ATC MOD_OA26_BB_DCYCLE_FULL.1
Set blackbody heater duty cycle to FULL
2016/064 05:00:00 ATC MOD_OA26_BB_270K_A.2
BB Temp Set to 270K for CP A Coefficients
2016/064 05:00:30 ATC MOD_OA26_BB_DCYCLE_THIRD.1
Set blackbody heater duty cycle to THIRD
Saturday, March 05, 2016
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2016/065 02:00:00 ATC MOD_OA26_BB_290K_A.2
BB Temp Set to 290K for CP A Coefficient
Maneuvers:
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Terra Lunar Roll will take place on 2016/088.
Terra DMU #95 took place on 2015/351.
Terra IAM #44 took place on 2016/049.
MODIS Anomalies:
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Standby and Safe Transition
When running the procs to transition from Safe to Standby, and from Standby to Science, the real-time log would read out that the transition had failed although upon verifying that all major expected telemetry points had changed to their expected state, it was determined that the transitions were both successful. On the transition to Standby Mode from Safe Mode, the transition "failed" because it was looking for the telemetry point MOD_CR_RC_CFPA_T3SET to say "NOT", when it actually read "NOT SELECTED". After looking into it, the point MOD_CR_RC_CFPA_T3SET can only read "NOT SELECTED" or "SELECTED". There is an error in the proc MOD_STBY_TXTN('A') and it should be changed to check for "NOT SELECTED" as opposed to "NOT". When transitioning to Science Mode from Standby Mode, the transition "failed" as well. The real-time log did not explicitly state what had caused it to fail like the Standby transition proc had. We would hypothesize that it is either do to the same telemetry point, MOD_CR_RC_CFPA_T3SE, or because of the software patch that keeps the B-side formatter on instead of the A-side formatter. More investigation is necessary.
Nadir Door
When running the MOD_NAD_TO_OPEN proc, the telemetry point NAD_OPEN initially read "NOT OPEN". However the Nadir Door step telemetry point read "3622" which is the expected point for the Nadir door to be completely open. After the first backorbit, when Terra came back into contact about one hour after issuing the Nadir Door open command, the NAD_OPEN telemetry point changed to "OPEN". We have encountered this issue multiple times in the past and expect it to occur during every Nadir Door opening from now on.
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.
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: 542 of 1316 Movements
Space View Door: 445 of 1316 Movements