MODIS IOT Terra Weekly Report
Mission Operations Days: 2021/345 through 2021/351
December 11, 2021 00:00:00 GMT to December 17, 2021 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)
|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|
|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|
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, December 11, 2021
Sunday, December 12, 2021
Monday, December 13, 2021
Tuesday December 14, 2021
Wednesday, December 15, 2021
Thursday, December 16, 2021
Friday, December 17, 2021
This Week's Scheduled MODIS Activities Not Completed:
This Month's MODIS Events:
December’s routine activities include a BlackBody WUCD on 2021/335-338, a PV Ecal on 2021/353, an SDSM Closed on 2021/355, and a Lunar Roll on 2021/358.
Non-routine activities include a Lunar Calibration without a spacecraft roll maneuver on 2021/358.
Next Week's MODIS Events:
Sunday December 19, 2021
2031/353 20:14:31-20:17:02 ATC MOD_OA27_PV_ECAL.3
OA-27: Photovoltaic bands electronics calibration.
Centered on S/C maximum latitude.
Tuesday December 21, 2021
2021/355 20:01:26-20:10:14 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4
OA-16: SD/SDSM screened side A, no door movement.
Friday December 24, 2021
Lunar Roll Maneuver (0 degrees)
2021/358 06:38:00 ATC MOD_OA04_NIGHT_RATE.1 (1:53 early)
2021/358 07:12:17-07:16:03 ATC MOD_OA08_ROLL_MAN.3
2021/358 07:31:02 ATC MOD_OA03_DAY_RATE.2 (1:53 late)
Terra DMU #132 took place on 2021/350.
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 290K and
the Solar Diffuser Door at the Screened position.
Note that the BlackBody will be maintained at 285K.
With the recent Terra SSR reset, MODIS was allocated a full complement of PWAs and no longer needs to reduce its data rate. Starting with September 26, 2021 (2021/269) at 0000z, the MODIS formatter commanding (day rate/night rate) will be synchronized with terminator crossing, which is its nominal timing.
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: 392.8 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: 146.7 of 500 hours
SRCA 1W Lamp #1: 592.4 of 4000 hours
SRCA 1W Lamp #2: 320.5 of 4000 hours
Solar Diffuser Door: 2148 of 3022 Movements
Nadir Aperture Door: 542 of 1316 Movements
Space View Door: 445 of 1316 Movements