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am1weekly_2001-055_2001-061

Mission Operations Days: 2001/055 to 2001/061
February 24, 2001 00:00:00 GMT to March 02, 2001 00:00:00 GMT


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NOTE: The Solar Diffuser sector size was changed from 50 frames to 5 frames and the SRCA sector size was changed from 10 frames to 55 frames from 061/14:06:30 to 061/18:21:56. The SCIABNORM flag was set from 061/14:04:50 to 061/ 18:35:25.

NOTE: The SRCA sector delay was left at a value of 50 (1 frame delay) after the SRCA activities on Friday March 2nd, (day 061). This delay will be changed back to zero on Monday, March 5th.
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Terra Spacecraft and MODIS Instrument Status:

Terra (AM-1) is in Normal Ops Mode
MODIS is in Science Mode - B Side
ComponentState(s)Comment
BlackbodyA Off; B On (290 K)Nominal
Calibration ElectronicsA Off; B OnNominal
Control ProcessorA Off; B OnNominal
Nadir DoorUnlatched, OpenNominal
Space View DoorUnlatched, OpenNominal
Solar Diffuser DoorUnlatched, ClosedNominal
FDDI FormatterA Off; B OnNominal
FDDI PortA On; B OffNominal
FIFO Memory#1 & #2 Off; #3 & #4 OnNominal
Format ProcessorA Off; B OnSRCA sector delay of 50
Power Supplies#1 Off; #2 OnNominal
PV VIS FPAA Off; B OnNominal
PV NIR FPAA Off; B OnNominal
PV SMIR FPAA Off; B OnNominal
PV LWIR FPAA Off; B OnNominal
PC LWIR FPAA Off; B OnNominal
RC Outgas HeatersAll Off (CS, IS, OS)Nominal
RC LWIR FPA HeaterOn (83 K)Nominal
RC SMIR FPA HeaterOffNominal
Scan AssemblyA Off; B OnNominal
SDSMA Off; B OffNominal
SRCAA Off; B OffNominal
PS1 Survival HeaterEnabledNominal
PS2 Survival HeaterEnabledNominal
Timing GeneratorA Off; B OnNominal
Flight SoftwareRev BD + 1 set of patches
  • FR Error Counting and Statistics (2 patches)
Nominal
Inhibit Ids SetNoneNominal
TMONs Enabled68Nominal

This Week’s Completed MODIS Activities:

Saturday, February 24, 2001

None

Sunday, February 25, 2001

None

Monday, February 26, 2001

2001/057 16:15:10 ATC Moved Formatter to Night from 15:44:39 to 16:15:10 to gather approx. 30 minutes of day rate data over groundtrack night

Tuesday, February 27, 2001

None

Wednesday, February 28, 2001

2001/059 21:07:13 ATC OA-16: SDSM Screened
2001/059 22:46:05 ATC OA-15: SDSM Open

Thursday, March 1, 2001

2001/060 00:41 Real-time Set Inhibit Ids 33 (CP) & 54 (SRCA)

Friday, March 2, 2001

2001/061 14:04:50 Real-time Set SCIABNORM flag to ABNORM
2001/061 14:06:30 Real-time Loaded new table #7, sector size definitions, SD=5, SRCA = 55
2001/061 14:07:20 Real-time Loaded FSW patch to set SD frames to 5 and SRCA frames to 55
2001/061 14:09:30 Real-time Loaded new table #8, sector start definition to center SRCA 55 frames over nominal 10 frame sector
2001/061 14:09:30 Real-time Dumped new table #7, sector size definitions, SD=5, SRCA = 55
2001/061 14:10:55 Real-time Dumped FSW patch to set SD frames to 5 and SRCA frames to 55
2001/061 14:12:08 Real-time Dumped new table #8, sector start definition to center SRCA 55
2001/061 15:11:44 Real-time Clear inhibit ID #33 (CP)
2001/061 15:12:23 Real-time Clear inhibit ID #54 (SRCA)
2001/061 15:23:06 – 15:54:40 ATC SRCA Crosstalk test Part I
2001/061 16:49:59 – 17:33:34 ATC SRCA Crosstalk test Part II
2001/061 18:20:25 Real-time Loaded launch table #7, sector size definitions, SD=50, SRCA = 10
2001/061 18:21:11 Real-time Loaded FSW patch to set SD frames to 50 and SRCA frames to 10
2001/061 18:21:56 Real-time Loaded launch table #8, nominal sector start definitions
2001/061 18:22:57 Real-time Dumped launch table #7, sector size definitions, SD=5, SRCA = 55
2001/061 18:23:52 Real-time Dumped FSW patch to set SD frames to 50 and SRCA frames to 10
2001/061 18:25:07 Real-time Dumped launch table #8, nominal sector start definitions
2001/061 18:35:25 Real-time Set SCIABNORM flag to NORM

This Week's Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

Saturday, March 3, 2001

None

Sunday, March 4, 2001

None

Monday, March 5, 2001

064/???? Real-time Set SRCA sector delay to zero

Tuesday, March 6, 2001

None

Wednesday, March 7, 2001

None

Thursday, March 8, 2001

None

Friday, March 9, 2001

None

Maneuvers:

The next MODIS Roll Maneuver for a Lunar Calibration through the Space View Port is scheduled for March 13th at approx. 21:32:52. The next Drag Makeup Maneuver (delta-V) is scheduled for March 14th at approx. 19:40:00

MODIS Anomalies:

There appears to be a problem processing the science data collected during the SRCA activities on Friday, March 2nd, 2001 (day 061). Specifically, this may be related to the change in sector sizes for the Solar Diffuser and SRCA. If this is the cause, it will affect data from 061/14:06:30 to 061/18:21:56 GMT. This problem is not yet well understood.

The SRCA sector delay was left at a value of 50 (1 frame delay) after the SRCA activities on Friday March 2nd, (day 061). This delay will be changed back to zero on Monday, March 5th. This has no impact to MODIS operations except for SRCA sector data. No SRCA activities will be scheduled until the delay is set to zero. The SRCA crosstalk activities will be corrected and re-CM’d.

General Instrument Comments:

MODIS is in Science Mode on the B-side with the SVD and NAD open, operating with the Formatter Resolution Flight Software Patches (FRFSP).

MODIS Telemetry Trends:

Temperature trends are correlating with the solar beta angle.

Non-MODIS Significant Events:

None

Limited Life Item Status:

SRCA 10W Lamp #1: 182.0 of 500 hours
SRCA 10W Lamp #2: 140.7 of 500 hours
SRCA 10W Lamp #3: 149.9 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours

SRCA 1W Lamp #1: 556.9 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours

Solar Diffuser Door: 1543 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements