MAIN PAGE
MODIS INFO
INSTRUMENT OPS
Weekly Reports
MODIS History
CALIBRATION
L1B PRODUCT INFO
& STATUS
CONTACTS & STAFF
ON-LINE DOCS
FREQUENTLY
ASKED QUESTIONS
SITE MAP
SEARCH
RELATED LINKS
MCST DICTIONARY
NASA/GSFC Website Privacy and Security Statement, Disclaimer, and Accessibility Certification
MODIS IOT Terra Weekly Report
Mission Operations Days: 2001/055 to 2001/061
February 23, 2001 20:00:00 GMT to March 2, 2001 20:00:00 GMT
******************************************************************
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.
******************************************************************
Terra Spacecraft and MODIS Instrument Status:
|
Terra (AM-1) is in Normal Ops Mode MODIS is in Science Mode - B Side |
||
| Component | State(s) | Comment |
|---|---|---|
| Blackbody | A Off; B On (290 K) | Nominal |
| Calibration Electronics | A Off; B On | Nominal |
| Control Processor | A Off; B On | Nominal |
| Nadir Door | Unlatched, Open | Nominal |
| Space View Door | Unlatched, Open | Nominal |
| Solar Diffuser Door | Unlatched, Closed | Nominal |
| FDDI Formatter | A Off; B On | Nominal |
| FDDI Port | A On; B Off | Nominal |
| FIFO Memory | #1 & #2 Off; #3 & #4 On | Nominal |
| Format Processor | A Off; B On | SRCA sector delay of 50 |
| Power Supplies | #1 Off; #2 On | Nominal |
| PV VIS FPA | A Off; B On | Nominal |
| PV NIR FPA | A Off; B On | Nominal |
| PV SMIR FPA | A Off; B On | Nominal |
| PV LWIR FPA | A Off; B On | Nominal |
| PC LWIR FPA | A Off; B On | Nominal |
| RC Outgas Heaters | All Off (CS, IS, OS) | Nominal |
| RC LWIR FPA Heater | On (83 K) | Nominal |
| RC SMIR FPA Heater | Off | Nominal |
| Scan Assembly | A Off; B On | Nominal |
| SDSM | A Off; B Off | Nominal |
| SRCA | A Off; B Off | Nominal |
| PS1 Survival Heater | Enabled | Nominal |
| PS2 Survival Heater | Enabled | Nominal |
| Timing Generator | A Off; B On | Nominal |
| Flight Software | Rev BD + 1 set of patches
| Nominal |
| Inhibit Ids Set | None | Nominal |
| TMONs Enabled | 68 | Nominal |
This Week’s Completed MODIS Activities:
Saturday, February 24, 2001None
Sunday, February 25, 2001None
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
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
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, 2001None
Sunday, March 4, 2001None
Monday, March 5, 2001064/???? Real-time Set SRCA sector delay to zero
Tuesday, March 6, 2001None
Wednesday, March 7, 2001None
Thursday, March 8, 2001None
Friday, March 9, 2001None
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
Email the MODIS IOT
to report any problem with the MODIS IOT Web Pages.
Email the MCST Webmaster
to report any problem with the MCST Web Pages.
Email the MCST Helpdesk
to ask a question about Level 1B usage, algorithms or software.
Last Update: Friday, 21-Feb-2003 14:38:12 EST
