Mission Operations Days: 2003/102 to 2003/108
April 12, 2003 00:00:00 GMT to April 18, 2003 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) |
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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, Closed | Nominal Science Mode |
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 + 9 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, April 12, 2003
None
Sunday, April 13, 2003
None
Monday, April 14, 2003
Terra 2nd Deep Space Calibration (DSC) pitch maneuver (with lunar view)
2003/104 21:21:44 ATC MOD_OA04_NIGHT_RATE.1 Sets MODIS Formatter to night rate Scheduled at nadir terminator crossing minus 35:54 for pre-DSC data rate balance
2003/104 21:57:38 ATC MOD_OA03_DAY_RATE.2 Sets MODIS Formatter to day rate Scheduled at nadir terminator crossing in lieu of normal formatter to night command
2003/104 22:33:32 ATC MOD_OA04_NIGHT_RATE.1 Sets MODIS Formatter to night rate Scheduled at nadir terminator crossing plus 35:54 for DSC data rate balance
Tuesday, April 15, 2003
None
Wednesday, April 16, 2003
None
Thursday, April 17, 2003
None
Friday, April 18, 2003
None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
April calibrations for the PFM MODIS instrument include biweekly SDSM, monthly radiometric, bimonthly PV ECAL, and quarterly SRCA full spectral and black body calibrations.
Tuesday, April 22, 2003
2003/112 15:10:32-15:23:43 ATC MOD_OA16_SD_SCREEN_FXD_SUN_A.1 OA-16: SD/SDSM Screened with SDSM Fixed at Sun View - A Side
2003/112 16:10:26-16:43:59 ATC MOD_OA19_SRCA_FULL_RAD_A.3 OA-19: SRCA Full Radiometric - A Side Data Collect Centered on S/C Night (16:18:22-16:52:27)
2003/112 16:49:25-17:02:36 ATC MOD_OA15_SD_OPEN_FIXED_SD_A.1 OA-15: SD/SDSM Screened with SDSM Fixed at SD View - A Side
2003/112 17:52:41-17:55:12 ATC MOD_OA27_PV_ECAL.3 OA-27: PV ECAL Data Collect Centered on S/C Minimum Latitude (17:53:56)
Wednesday, April 23, 2003
2003/113 13:25:21-14:17:00 ATC MOD_OA22_SRCA_FULL_SPECT_1A.4 OA-22: SRCA Full Spectral Test Part 1 - A Side Data Collect Centered on S/C Night (13:43:45-14:17:50)
2003/113 15:20:49-15:55:34 ATC MOD_OA22_SRCA_FULL_SPECT_2A.4 OA-22: SRCA Full Spectral Test Part 2 - A Side Data Collect Centered on S/C Night (15:22:38-15:56:43)
2003/113 16:43:02-17:34:18 ATC MOD_OA22_SRCA_FULL_SPECT_3A.4 OA-22: SRCA Full Spectral Test Part 3 - A Side Data Collect Centered on S/C Night (17:01:30-17:35:36)
2003/113 18:36:58-19:14:56 ATC MOD_OA22_SRCA_FULL_SPECT_4A.3 OA-22: SRCA Full Spectral Test Part 4 - A Side Data Collect Centered on S/C Night (18:40:23-19:14:29)
Thursday, April 24, 2003
2003/114 09:00:00 ATC MOD_OA26_BB_270K_A.1 Set blackbody temperature to 270K on the A-side
Friday, April 25, 2003
2003/115 03:00:00 ATC MOD_OA26_BB_280K_A.1 Set blackbody temperature to 280K on the A-side
2003/115 07:00:00 ATC MOD_OA26_BB_285K_A.1 Set blackbody temperature to 285K on the A-side
2003/115 10:00:00 ATC MOD_OA26_BB_290K_A.1 Set blackbody temperature to 290K on the A-side
2003/115 14:00:00 ATC MOD_OA26_BB_315K_A.1 Set blackbody temperature to 315K on the A-side
2003/115 14:00:30 ATC MOD_OA26_BB_DCYCLE_FULL.1 Set blackbody heater duty cycle to FULL
2003/115 17:00:00 ATC MOD_OA26_BB_270K_A.1 Set blackbody temperature to 270K on the A-side
2003/115 17:00:30 ATC MOD_OA26_BB_DCYCLE_THIRD.1 Set blackbody heater duty cycle to THIRD
Saturday, April 26, 2003
2003/116 13:00:00 ATC MOD_OA26_BB_290K_A.1 Set blackbody temperature to 290K on the A-side
Maneuvers:
The second Terra Deep Space Calibration Maneuver (with the Moon in the instruments' fields of view) was completed successfully on April 14, 2003. All Maneuver Activities executed as planned and no anomalous conditions were detected. MODIS performed as expected during the maneuver. The temperature of the cold focal planes peaked at 94.1 K, and returned to their nominally controlled 83 K about 16 hours later. The following are a few key events that occurred with respect to MODIS for the maneuver:
Time (GMT) | Pitch Offset (degrees) | Event |
---|---|---|
2003/104 21:39:59 | n/a | MODIS direct broadcast disabled |
2003/104 21:57:38 | 0 | Start of Deep Space Pitch Maneuver MODIS commanded to DAY rate |
2003/104 22:00:41 | 15 | End of pitch acceleration |
2003/104 22:04:13 | 55 | MODIS focal plane heater voltage drops |
2003/104 22:05:00 | 64 | Terra nadir vector at the limb of the Earth |
2003/104 22:05:24 | 69 | Begin spacecraft night (entering eclipse) |
2003/104 22:06:08 | 75 | MODIS cold focal plane temperature increases |
2003/104 22:07:30 | 90 | MODIS focal plane heater voltage at ~zero volts |
2003/104 22:12:22 | 144 | LWIR CFPA temperature exceeds 85K |
2003/104 22:13:59 | 162 | LWIR CFPA temperature saturates at 85.9K |
2003/104 22:15:35 | 179 | Deep space pitch maneuver midpoint |
2003/104 22:16:14 | 186 | SMIR CFPA temperature exceeds 88K |
2003/104 22:18:51 | 215 | SMIR CFPA temperature exceeds 90K |
2003/104 22:29:02 | 328 | SMIR CFPA peak temperature at 94.1K |
2003/104 22:30:30 | 343 | Begin pitch rate deceleration |
2003/104 22:33:32 | 360 | End of deep space pitch maneuver MODIS commanded to NIGHT rate |
2003/104 22:50:00 | n/a | Direct broadcast re-enabled |
2003/104 22:54:17 | n/a | MODIS data inputs to SSR disabled |
2003/105 00:04:44 | n/a | MODIS data inputs to SSR re-enabled |
There will not be a Terra MODIS lunar calibration during the month of April. The required roll angle exceeds the maximum allowed angle of -20 degrees.
The next Terra Drag Make-Up (DMU) Maneuver is scheduled for Wednesday, April 30, 2003, at 19:15 GMT (DOY 2003/120). The DMU will be a 20-second burn.
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.
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.
http://jupiter02.gsfc.nasa.gov/links/links.htm
Limited Life Item Status:
SRCA 10W Lamp #1: 209.2 of 500 hours
SRCA 10W Lamp #2: 157.7 of 500 hours
SRCA 10W Lamp #3: 166.9 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours
SRCA 1W Lamp #1: 561.7 of 4000 hours
SRCA 1W Lamp #2: 276.7 of 4000 hours
Solar Diffuser Door: 2133 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements