Sorry, you need to enable JavaScript to visit this website.

MCST Banner Image

am1weekly_2001-062_2001-068

Mission Operations Days: 2001/062 to 2001/068
March 03, 2001 00:00:00 GMT to March 09, 2001 00:00:00 GMT


******************************************************************
NOTE: BAND 5 GAIN CHANGES were temporarily made for 068/16:34:30 – 20:38:34.
******************************************************************

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 OnNominal
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, March 3, 2001

None

Sunday, March 4, 2001

None

Monday, March 5, 2001

2001/064 20:14:55 – MOD_FR_DELAY_CHANGE(‘SR’,0) ran to set the sector delay back to zero from 50.

Tuesday, March 6, 2001

None

Wednesday, March 7, 2001

2001/066 21:16:03 OA-16: SDSM SCREENED
2001/066 22:54:56 OA-15: SDSM OPEN

Thursday, March 8, 2001

2001/067 21:08:05 – 22:05:36 OA-23: SRCA Full Spatial

Friday, March 9, 2001

2001/068 16:34:30 – 16:41:10 B5 Gain change:

DetectorFromTo
111766
211363
311565
411766
511263
611263
710759
810860
910255
1010154
1110054
129953
139651
149953
1510054
1610154
179550
1810759
1910557
2010255

2001/068 17:41:48 OA-16: SDSM SCREENED
2001/068 19:20:41 OA-15: SDSM OPEN

2001/068 20:32:07 – 20:38:34 B5 Gain change back:

DetectorFromTo
166117
263113
365115
466117
563112
663112
759107
860108
955102
1054101
1154100
125399
135196
145399
1554100
1654101
175095
1859107
1957105
2055102

This Week's Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

Saturday, March 10, 2001

None

Sunday, March 11, 2001

None

Monday, March 12, 2001

None

Tuesday, March 13, 2001

072/20:05:20 – 20:25:00 ADC_IRU_TO_HI_RATE
072/21:30:51 ATC Move Formatter to Night ahead by 3:23 to ensure 50/50 day/night
072/21:32:52 FOT ATC commanding: Begin slew to –16.512 degrees
072/21:40:14 ATC Set Formatter to Day Rate
072/21:40:16 ATC Set SCIABNORM Flag to ABNORM
072/21:40:18 ATC PC DC Restore to OFF
072/21:40:20 ATC PV DC Restore to OFF
072/21:40:22 ATC Sector Rotation to –3072 (EA to SV and OBCs)
072/21:46:52 ATC Sector Rotation to Zero (Normal)
072/21:46:54 ATC PV DC Restore to ON
072/21:46:56 ATC PC DC Restore to ON
072/21:46:58 ATC Set SCIABNORM Flag to NORM
072/21:47:00 ATC Set Formatter to Night Rate
072/21:54:40 FOT ATC commanding: Return to nominal attitude
072/21:55:00 – 22:06:00 ADC_IRU_TO_LO_RATE
072/22:27:01 ATC Move Formatter to Day later by 3.23 to ensure 50/50 day/night

Wednesday, March 14, 2001

None

Thursday, March 15, 2001

None

Friday, March 16, 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: 182.3 of 500 hours
SRCA 10W Lamp #2: 141.0 of 500 hours
SRCA 10W Lamp #3: 150.2 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours

SRCA 1W Lamp #1: 557.1 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours

Solar Diffuser Door: 1555 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements