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MODIS IOT Aqua Weekly Report

Mission Operations Days: 2002/166 to 2002/172
June 15, 2002 00:00:00 GMT to June 22, 2002 00:00:00 GMT

Aqua Spacecraft and MODIS Instrument Status:

PM-1 "Aqua" is in Fine Pointing Standby Mode
FM1 MODIS is in B-Side Science Mode
Component State(s) Comment
Blackbody A Off; B On (at 285K) Nominal Science Mode
Calibration Electronics A Off; B On Nominal Science Mode
Control Processor A Off; B On Nominal Science Mode
Nadir Door Unlatched, Closed Nominal Science Mode
Space View Door Unlatched, Open Nominal Science Mode
Solar Diffuser Door Unlatched, Closed Nominal Science Mode
FDDI Formatter A Off; B On Nominal Science Mode
FDDI Port A Off; B On Nominal Science Mode
FIFO Memory #1 & #2 Off; #3 & #4 On Nominal Science Mode
Format Processor A Off; B On Nominal Science Mode
Power Supplies #1 Off, #2 On Nominal Science Mode
PV VIS FPA A Off; B On Nominal Science Mode
PV NIR FPA A Off; B On Nominal Science Mode
PV SMIR FPA A Off; B On Nominal Science Mode
PV SMIR FPA A Off; B On Nominal Science Mode
PV LWIR FPA A Off; B On Nominal Science Mode
PC LWIR FPA A Off; B On Nominal Science Mode
RC Outgas Heaters All 3 (CS, IS, OS) Off Nominal Science Mode
RC LWIR FPA Heater Off Nominal Science Mode
RC SMIR FPA Heater On Nominal Science Mode
Scan Assembly A Off; B On Nominal Science Mode
SDSM Off Nominal Science Mode
SRCA Off Nominal Science Mode
PS1 Survival Heaters Enabled Nominal Science Mode
PS2 Survival Heaters Enabled Nominal Science Mode
Timing Generator A Off; B On Nominal Science Mode
Flight Software Rev BJ Nominal Science Mode
Inhibit Ids Set None Nominal Science Mode

This Week's Completed MODIS Activities:

Saturday, June 15, 2002 Notes for Yaw Maneuvers:

The yaw maneuvers use sector rotation (to -3400 counts). During this time, the formatter is set to DAY rate. In order to balance the MODIS data output, and equal amount of NIGHT rate data will be collected during what would normally be DAY rate.

Day #1 of Yaw Maneuvers, Friday June 14th, 2002 (continued)

0 Degree Yaw maneuver
2002/166 00:03:54-00:24:52 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 00:36:48 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1
2002/166 01:07:46 MCL Set formatter to Night rate MOD_OA03_FR_NIGHT_RATE.2

Day #2 of Yaw Maneuvers, Saturday, June 15th, 2002

0 Degree Yaw maneuver
2002/166 11:35:33-11:56:31 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 12:08:27 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1
2002/166 12:39:25 MCL Set formatter to Night rate MOD_OA03_FR_NIGHT_RATE.2

-2.6 Degree Yaw maneuver
2002/166 13:14:21-13:35:19 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 13:47:15 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1
2002/166 14:18:13 MCL Set formatter to Night rate MOD_OA03_FR_NIGHT_RATE.2

2.6 Degree Yaw maneuver
2002/166 14:53:09-15:14:07 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 15:26:03 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1
2002/166 15:57:02 MCL Set formatter to Night rate MOD_OA03_FR_NIGHT_RATE.2

5.2 Degree Yaw maneuver
2002/166 16:31:58-16:52:56 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 17:04:52 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1
2002/166 17:35:50 MCL Set formatter to Night rate MOD_OA03_FR_NIGHT_RATE.2

7.8 Degree Yaw maneuver
2002/166 18:10:46-18:31:44 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 18:43:40 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1
2002/166 19:14:39 MCL Set formatter to Night rate MOD_OA03_FR_NIGHT_RATE.2

10.4 Degree Yaw maneuver
2002/166 19:49:34-20:10:32 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 20:22:29 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1
2002/166 20:53:27 MCL Set formatter to Night rate MOD_OA03_FR_NIGHT_RATE.2

13 Degree Yaw maneuver
2002/166 21:28:23-21:49:21 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 22:01:17 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1
2002/166 22:32:16 MCL Set formatter to Night rate MOD_OA03_FR_NIGHT_RATE.2

0 Degree Yaw maneuver
2002/166 23:07:11-23:28:09 MCL Double duration SD screened, SDSM fixed at sun calibration MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/166 23:40:06 MCL Set formatter to Day rate MOD_OA03_FR_DAY_RATE.1

Sunday, June 16, 2002

2002/167 00:11:04 MCL Set formatter to Night rate (Final Yaw Maneuver Event) MOD_OA03_FR_NIGHT_RATE.2
2002/167 15:39:01-15:52:12 MCL OA16: SD/SDSM with SDSM fixed at Sun View MOD_OA16_SD_SCREEN_FIXED_SUN.1
2002/167 17:17:49-17:31:00 MCL OA15: SD/SDSM with SDSM fixed at SD View MOD_OA15_SD_OPEN_FIXED_SD.1
2002/167 18:08:49-18:11:20 MCL Cool PV ECAL MOD_OA27_PV_ECAL.1
2002/167 18:57:14-19:01:45 MCL Cool PC ECAL MOD_OA28_PC_ECAL.1
2002/167 20:00:00 MCL Set BB to 270K for BB Stepping Calibration MOD_BB_TEMP_SET_270K_B.1

Monday, June 17, 2002

2002/168 16:00:05 - 16:11:25 680 second Delta-V burn maneuver.

2002/168 14:00:00 MCL Set Blackbody temperature to 280K MOD_BB_TEMP_SET_280K_B.1
2002/168 18:00:00 MCL Set Blackbody temperature to 285K MOD_BB_TEMP_SET_285K_B.1
2002/168 19:56:33 - 20:01:05 Real-time PC-17 1W Spatial SRCA functional test part 1 MOD_PC17_1OF2('B')
2002/168 20:13:35 - 20:13:48 Real-time PC-17 1W Spatial SRCA functional test part 2 MOD_PC17_2OF2('B')
2002/168 21:00:00 MCL Set Blackbody temperature to 290K MOD_BB_TEMP_SET_290K_B.1

Tuesday, June 18, 2002

2002/169 01:00:00 MCL Set Blackbody temperature to 295K MOD_BB_TEMP_SET_295K_B.1
2002/169 01:00:30 MCL Set Blackbody heater duty cycle to 100% MOD_BB_DCYCLE_FULL.1
2002/169 05:00:00 MCL Set Blackbody temperature to 315K MOD_BB_TEMP_SET_315K_B.1
2002/169 08:00:00 MCL Set Blackbody temperature to 270K MOD_BB_TEMP_SET_270K_B.1
2002/169 08:00:30 MCL Set Blackbody heater duty cycle to 33% MOD_BB_DCYCLE_THIRD.1

Wednesday, June 19, 2002

2002/170 04:00:00 MCL Set Blackbody to 285K MOD_BB_TEMP_SET_285K_B.1
2002/170 12:00:00 - 12:00:16 MCL Setup commands for SRCA activities MOD_SRCA_SETUP.2
2002/170 12:05:00 - 12:39:13 MCL OA-19 SRCA Full Radiometric Calibration MOD_OA19_SRCA_FULL_RAD.1
2002/170 19:40:00 - 19:40:16 MCL Setup commands for SRCA activities MOD_SRCA_SETUP.2
2002/170 19:45:00 - 20:42:30 MCL OA-23 SRCA Full Spatial Calibration MOD_OA23_SRCA_FULL_SPAT.1

Thursday, June 20, 2002

2002/171 03:55:00 - 03:55:16 MCL Setup commands for SRCA activities MOD_SRCA_SETUP.2
2002/171 04:00:00 - 04:51:52 MCL OA-22 SRCA Full Spectral Calibration Part 1 MOD_OA22_SRCA_FULL_SPECT_1.1
2002/171 05:40:00 - 06:14:32 MCL OA-22 SRCA Full Spectral Calibration Part 2 MOD_OA22_SRCA_FULL_SPECT_2.1
2002/171 07:15:00 - 07:15:16 MCL Setup commands for SRCA activities MOD_SRCA_SETUP.2
2002/171 07:20:00 - 08:11:01 MCL OA-22 SRCA Full Spectral Calibration Part 3 MOD_OA22_SRCA_FULL_SPECT_3.1
2002/171 09:00:00 - 09:38:01 MCL OA-22 SRCA Full Spectral Calibration Part 4 MOD_OA22_SRCA_FULL_SPECT_4.1
2002/171 13:55:00 - 14:01:26 MCL OA-14 Sector Rotation Test MOD_OA14_SECT_ROT_SCAN.1

Lunar Roll Maneuver (-11.6745 degree roll)

2002/171 15:23:31 MCL Set formatter to day rate using individual command MOD_OA03_FR_DAY_RATE.1
2002/171 16:12:58 MCL Set formatter to night rate 03:23 earlier than normal to balance instrument data rate MOD_OA04_FR_NIGHT_RATE.2

2002/171 16:42:27 - 16:49:13 MCL Lunar calibration via roll maneuver MOD_OA08_ROLL_MAN.1
(command details listed below)

2002/171 16:42:27 MCL Set formatter to Day rate
2002/171 16:42:29 MCL Set SCIABNORM flag to ABNORM
2002/171 16:42:31 MCL Disable PC DC Restore
2002/171 16:42:33 MCL Disable PV DC Restore
2002/171 16:42:33 MCL Sector Rotation to -3072
2002/171 16:42:35 - 16:49:05 Lunar calibration data collection
2002/171 16:49:05 MCL Sector Rotation to zero
2002/171 16:49:07 MCL Enable PC DC Restore
2002/171 16:49:09 MCL Enable PV DC Restore
2002/171 16:49:11 MCL Set SCIABNORM flag to NORM
2002/171 16:49:13 MCL Set formatter to Night rate

2002/171 17:05:47 MCL Set formatter to day rate 03:23 later than normal to balance instrument data rate MOD_OA03_FR_DAY_RATE.1
2002/171 17:51:51 MCL MOD_OA04_FR_NIGHT_RATE.2

Friday, June 21, 2002

None

This Week's Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

MET day 50, June 23rd: Notes for Yaw Maneuvers:

The yaw maneuvers use sector rotation (to -3400 counts). During this time, the formatter is set to DAY rate. In order to balance the MODIS data output, and equal amount of NIGHT rate data will be collected during what would normally be DAY rate.

Day #3 of Yaw Maneuvers, Sunday, June 23, 2002

0 Degree Yaw
2002/174 12:22:10-12:43:08 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/174 12:55:03 MOD_OA03_FR_DAY_RATE.1
2002/174 13:26:06 MOD_OA03_FR_NIGHT_RATE.2

-1.3 Degree Yaw
2002/174 14:01:03-14:22:01 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/174 14:33:56 MOD_OA03_FR_DAY_RATE.1
2002/174 15:04:58 MOD_OA03_FR_NIGHT_RATE.2

1.3 Degree Yaw
2002/174 15:39:55-16:00:53 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/174 16:12:49 MOD_OA03_FR_DAY_RATE.1
2002/174 16:43:51 MOD_OA03_FR_NIGHT_RATE.2

3.9 Degree Yaw
2002/174 17:18:48-17:50:9 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/174 17:51:42 MOD_OA03_FR_DAY_RATE.1
2002/174 18:22:44 MOD_OA03_FR_NIGHT_RATE.2

6.5 Degree Yaw
2002/174 18:57:41-19:18:39 MOD_OA09_YAW_MAN_SCREEN_DBL.1

2002/174 19:30:35 MOD_OA03_FR_DAY_RATE.1
2002/174 20:01:37 MOD_OA03_FR_NIGHT_RATE.2

9.1 Degree Yaw
2002/174 20:38:34-20:57:32 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/174 21:09:28 MOD_OA03_FR_DAY_RATE.1
2002/174 21:40:30 MOD_OA03_FR_NIGHT_RATE.2

11.7 Degree Yaw
2002/174 22:15:27-22:36:25 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/174 22:48:21 MOD_OA03_FR_DAY_RATE.1
2002/174 23:19:23 MOD_OA03_FR_NIGHT_RATE.2

0 Degree Yaw
2002/175 23:54:20-00:15:18 MOD_OA09_YAW_MAN_OPEN_DBL.1

Day #3 of Yaw Maneuvers, Monday, June 24, 2002 (continued)

2002/175 00:27:14 MOD_OA03_FR_DAY_RATE.1
2002/175 00:58:12 MOD_OA03_FR_NIGHT_RATE.2

Day #4 of Yaw Maneuvers, Monday, June 24, 2002

0 Degree Yaw
2002/175 11:26:30-11:47:28 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/175 11:59:24 MOD_OA03_FR_DAY_RATE.1
2002/175 12:30:26 MOD_OA03_FR_NIGHT_RATE.2

2.6 Degree Yaw
2002/175 13:05:3213-26:21 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/175 13:38:16 MOD_OA03_FR_DAY_RATE.1
2002/175 14:09:19 MOD_OA03_FR_NIGHT_RATE.2

5.2 Degree Yaw
2002/175 14:44:16-15:05:14 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/175 15:17:09 MOD_OA03_FR_DAY_RATE.1
2002/175 15:48:11 MOD_OA03_FR_NIGHT_RATE.2

7.8 Degree Yaw
2002/175 16:23:08-16:44:06 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/175 16:56:02 MOD_OA03_FR_DAY_RATE.1
2002/175 17:27:04 MOD_OA03_FR_NIGHT_RATE.2

10.4 Degree Yaw
2002/175 18:01:51-18:22:49 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/175 18:34:55 MOD_OA03_FR_DAY_RATE.1
2002/175 19:05:57 MOD_OA03_FR_NIGHT_RATE.2

13 Degree Yaw
2002/175 19:40:54-20:01:52 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/175 20:13:48 MOD_OA03_FR_DAY_RATE.1
2002/175 20:44:50 MOD_OA03_FR_NIGHT_RATE.2

14.3 Degree Yaw
2002/175 21:19:47-21:40:45 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/175 21:52:41 MOD_OA03_FR_DAY_RATE.1
2002/175 22:23:43 MOD_OA03_FR_NIGHT_RATE.2

0 Degree Yaw
2002/175 22:58:40-23:19:38 MOD_OA09_YAW_MAN_OPEN_DBL.1

2002/175 23:31:34 MOD_OA03_FR_DAY_RATE.1
2002/176 00:02:36 MOD_OA03_FR_NIGHT_RATE.2

MET day 51, June 24th:

Fourth set of six MODIS yaw maneuvers; SD screen opened Open Nadir Door; FIRST LIGHT!

MET day 54, June 27th:

Detector Voltage Bias Vdet/Itwk sweeps

Maneuvers:

MODIS Yaw Maneuvers Part 2 of 4

2002/165 14:11:42 Yaw Maneuver #1 start (to -1.3 degrees)
2002/165 14:30:48 Returned to nominal pointing

2002/165 15:50:30 Yaw Maneuver #2 start (to 1.3 degrees)
2002/165 16:09:36 Returned to nominal pointing

2002/165 17:27:18 Yaw Maneuver #3 start (to 3.9 degrees)
2002/165 17:50:26 Returned to nominal pointing

2002/165 19:04:43 Yaw Maneuver #4 start (to 6.5 degrees)
2002/165 19:30:37 Returned to nominal pointing

2002/165 20:42:24 Yaw Maneuver #5 start (to 9.1 degrees)
2002/165 21:10:34 Returned to nominal pointing

2002/165 22:20:13 Yaw Maneuver #6 start (to 11.7 degrees)
2002/165 22:50:21 Returned to nominal pointing

The -11.6745 degree roll maneuver for the MODIS lunar calibration is scheduled for June 20th, 2002. The roll out slew will begin at 6:33:19 and reach the rolled position at 16:41:35. The return slew will begin at 16:49:05 and reach the nominal position at 16:57:21.

The next twelve yaw maneuvers for MODIS SD/SDSM calibrations are now scheduled for June 23rd and 24th with six maneuvers on each of those days.

Yaw maneuvers for CERES calibrations are planned for Wednesday, June 26th. Five yaw maneuvers are scheduled with angles alternating between -0.8 and 14 degrees.

The Deep Space Calibration pitch maneuver(s) is(are) currently scheduled for July 24th.

Ascent Plan:
  • Ascent 1 on May 13, 2002 at 12:14 for 335 seconds - Successful
  • Ascent 2 on June 5th, 2002 at 15:13 for 962 seconds - Successful
  • Ascent 3 on June 8th, 2002 at 13:02 for 760 second - Successful
  • Ascent 4 on June 10th, 2002 at 14:20 for 945 seconds - Successful
  • Ascent 5 on June 13th, 2002 at 13:50 for 750 seconds - Successful
  • Ascent 6 on June 17th, 2002 at 16:00 for 680 seconds - Successful

The final ascent burn started at 16:00:05 (five seconds late). The burn was successful and Aqua has now attained its desired operational orbit.

2002/171 15:05 Begin yaw slew to 14.35 degrees for ascent burn
2002/171 16:00:05 Start of 6th ascent burn, five seconds late due to late communications acquisition
2002/171 16:54 Spacecraft returned to nominal pointing

MODIS Anomalies:

5D/77 CP Event Pairs:
  • 56 pairs have been received total.
  • 23 pairs between the first Turn On (DOY 127) and S/C to Survival Mode (DOY 139).
  • 32 pairs between the second Turn On (DOY 144) and Science Mode Transition (DOY 158).
  • 1 pair since Science Mode Transition (DOY 158).
  • The last event pair was seen on DOY 167 at 17:30:43.
5D Single CP Event:
  • No 77 following message, no related MODIS commanding in proximity.
  • 3 single events have been received, times listed below.
  • DOY 162 at 14:16:59 (roughly 92 hours after Science Mode transition).
  • DOY 166 at 20:44:46 (midway between the 10.4 and 13 degree yaw maneuvers, not during).
  • DOY 167 at 14:27:50 (no commands in near proximity).
77 Single CP Event:
  • No 5D preceding message, no related MODIS commanding in proximity.
  • 1 single event has been received, time listed below.
  • DOY 164 at 00:35:39 (64 seconds after CP Macro 9, SDD to Close, in an SD/SDSM Screened, SDSM fixed at Sun, calibration. The macro was still running when the event occurred).
5D Yaw Maneuver Events:
  • 9 single 5D event messages were observed throughout the SD/SDSM Yaw Maneuvers.
  • Each of these events occurred within 7 to 10 seconds after a sector rotation (to -3400) command for the SD/SDSM calibrations.
  • An event did not occur for every calibration, and some calibrations resulted in two 5D events.

General Instrument Comments:

MODIS is currently in B-Side Science Mode (Power Supply 2, Control Processor B) with the Space View Door at its Open Position. The instrument has reached its nominal operating temperature.

MODIS Telemetry Trends:

No abnormal telemetry trends have been observed. The cold focal plane heater voltage is being monitored, but there is no definitive evidence of a decrease in temperature margin.

The cold focal plane heater started controlling at 83K (with the SMIR focal plane heater) on Sunday, June 9th at 18:26 GMT. The blackbody stabilized at 285K at approximately 18:40 GMT June 11th.

Non-MODIS Significant Events:

Monday, June 17, 2002:

Ascent burn six was completed successfully; Aqua has now attained its desired operational orbit.

Tuesday, June 18, 2002:

CERES opened its Aft and Fore covers.

The Aqua status can be viewed online at:
http://jupiter02.gsfc.nasa.gov/links/links.htm

Limited Life Item Status:

SRCA 10W Lamp #1: 203.1 of 500 hours
SRCA 10W Lamp #2: 177.3 of 500 hours
SRCA 10W Lamp #3: 180.1 of 500 hours
SRCA 10W Lamp #4: 57.7 of 500 hours

SRCA 1W Lamp #1: 499.9 of 5000 hours
SRCA 1W Lamp #2: 269.8 of 5000 hours

Solar Diffuser Door: 1680 of 3022 Movements
Nadir Aperture Door: 1046 of 1316 Movements
Space View Door: 626 of 1316 Movements
Responsible Civil Servant: Ed Masuoka

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Last Update: Tuesday, 03-Dec-2002 13:08:59 EST

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