Mission Operations Days: 2003/172 to 2003/178
June 21, 2003 00:00:00 GMT to June 27, 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) |
||
|---|---|---|
| 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 | Solar Diffuser Screen Anomaly. Under Investigation |
| 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, June 21, 2003
None
Sunday, June 22, 2003
None
Monday, June 23, 2003
None
Tuesday, June 24, 2003
None
Wednesday, June 25, 2003
None
Thursday, June 26, 2003
None
Friday, June 27, 2003
None
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
The only remaining June calibration for the PFM MODIS instrument is the bimonthly PV Electronics calibration. The scheduling of this activity has slipped until July 3rd.
SD/SDSM calibrations are currently on hold pending the resolution of the solar diffuser screen anomaly.
Tuesday, July 1, 2003
2003/182 15:58:56 - 15:59:19 Real-time FS1_EXEC_INHIB_ID_SET(33) Set inhibit ID for MODIS Control Processor commands
2003/182 15:59:34 - 16:00:00 Real-time FS1_EXEC_INHIB_ID_SET(53) Set inhibit ID for MODIS SDSM commands
Wednesday, July 2, 2003
SDS Anomaly Recovery
2003/183 12:43:49 - 12:44:31 Real-time MOD_MEM_DUMP(‘motor_constants’,35,0,0,1,2) Memory dump of MODIS table #16
2003/183 12:44:51 - 12:45:36 Real-time MOD_MEM_DUMP(‘motor_trigger_data’,60,0,0,1,2) Memory dump of MODIS table #17
2003/183 12:45:54 - 12:46:26 Real-time MOD_MEM_DUMP(‘motor_pos_when_hit’,12,0,0,1,1) Memory dump of MODIS table #18
2003/183 12:47:13 - 12:47:43 Real-time MOD_MEM_DUMP(‘motor_data’,12,0,0,1,1) Memory dump of MODIS table #20
2003/183 13:12:29 - 13:14:23 Real-time MOD_MEM_DUMP(‘cp_mode’,250,0,0,1,8) Memory dump of MODIS table #11
2003/183 13:14:45 - 13:15:08 Real-time MOD_MEM_LOAD(‘am1_mpr_modis_table11_saf_no_sdd_close’,1,’n’,’disable’,1,1) Memory load to table 11 to not close the MODIS SDD when transitioning to Safe Mode
2003/183 13:16:29 - 13:16:52 Real-time MOD_MEM_LOAD(‘am1_mpr_modis_table11_srv_no_sdd_close’,1,’n’,’disable’,1,1)
Memory load to table 11 to not close the MODIS SDD when transitioning to Survival Mode
2003/183 13:17:08 - 13:19:07 Real-time MOD_MEM_DUMP(‘cp_mode’,250,0,0,1,8) Memory dump of MODIS table #11
2003/183 17:46:28 - 17:48:32 Real-time MOD_MOVE_DOOR(‘sdd’,’screened’,’a’) Move the Solar Diffuser Door to the Screened position
2003/183 17:50:55 - 17:51:26 Real-time MOD_MEM_DUMP(‘motor_pos_when_hit’,12,0,0,1,1) Memory dump of MODIS table #18
2003/183 21:51:16 - 22:00:04 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA16: SD/SDSM screened side A, no door movement
2003/183 19:32:51 Real-time FS1_EXEC_INHIB_ID_RST(53) Clear inhibit ID for MODIS SDSM commands
2003/183 15:58:56 Real-time FS1_EXEC_INHIB_ID_RST(33) Clear inhibit ID for MODIS Control Processor commands
2003/183 21:04:15 Real-time FS1_EXEC_INHIB_ID_SET(34) Set inhibit ID for MODIS SVD and NAD commands
2003/183 21:04:52 Real-time FS1_EXEC_INHIB_ID_SET(58) Set inhibit ID for MODIS door power commands
Thursday, July 3, 2003
2003/184 11:14:50 - 11:17:20 ATC MOD_OA27_PV_ECAL PV Band electronics calibration
Maneuvers:
The next MODIS lunar calibration will be on July 18, 2003 (203/199). The roll angle will be -10.3692 degrees, and data collection will be from 03:14:57 - 03:21:27 GMT.
Three Terra inclination maneuvers are currently being planned for July 8th, August 5th, and August 7th, 2003. For each inclination maneuver, a contingency activity will be scheduled in the stored command load to close the MODIS Space View and Nadir doors prior to entering daylight following the maneuver, but the commands will be inhibited after the spacecraft successfully returns to a nominal attitude.
MODIS Anomalies:
During the May 6, 2003 (doy 2003/126) Terra Solar Diffuser calibration with the Solar Diffuser Door in the full open position, the telemetry mnemonic, MOD_CR_DR_SDS_OPEN, did not change from NOT_OPEN to OPEN as was expected. A xx6A CP Event Message, "MTR SDD Trigger Not Found", was generated. Further analysis by MCST determined that the screen had indeed remained NOT_OPEN during this calibration, however, dump data analysis by the IOT showed that the drive motor moved through the entire range of the screen from closed to open to closed. Thermal analysis is underway to determine the cause of this anomaly and Terra SDSM calibrations are temporarily on hold.
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: 213.4 of 500 hours
SRCA 10W Lamp #2: 159.5 of 500 hours
SRCA 10W Lamp #3: 168.7 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours
SRCA 1W Lamp #1: 562.0 of 4000 hours
SRCA 1W Lamp #2: 276.7 of 4000 hours
Solar Diffuser Door: 2145 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements