This is the AIRS, AMSU-A, and HSB weekly operations status report for Thursday, February 22, 2024 (almost the end of week 1138 of the Aqua mission).

AIRS:  The AIRS instrument remains healthy with all voltages, currents, and temperatures as expected.
AMSU-A1:  AMSU-A1 is healthy except for channels 4, 5, 6, and 7.
AMSU-A2:  AMSU-A2, which provided channels 1 and 2 of the AMSU-A suite, suffered a non-recoverable loss of power on September 24, 2016 and is no longer operational.
HSB:  HSB has been non-operational since February 2003 due to a scanner anomaly.


Instrument activities since previous report:

An AIRS guard test ran on Sunday, February 18.  Here is the timeline (UT):
   049/22:20:00 AIRS Guard Test begins (AIRS in CHECKOUT mode)
   049/22:47:00 AIRS back in OPERATE mode

MODIS Lunar Calibration #229 was executed on Tuesday, February 20.  Here is the timeline (UT):
   051/00:22:00  AIRS put into READY mode prior to Lunar Cal
   051/00:47:00  AIRS back in OPERATE mode

Upcoming events:

1) An AIRS photometric calibration test is scheduled for Thursday, March 7.  Here is the timeline (UT):
   067/21:43:00  Photocal Lamp 3 On (S/C night)
   067/21:51:00  Photocal Lamps Off (S/C night)
   067/22:33:00  Photocal Lamp 3 On (S/C day)
   067/22:41:00  Photocal Lamps Off (S/C day)

2) An AIRS OBC Float test is planned for March, although a date has not been set.  The test will last for 2 - 3 days.  A special gain table will be loaded to Aqua for use in the test.
The scheduled date of this activity will appear in an upcoming report.

3) Separately from the OBC Float gain table, a new Optimum (normal operations) gain & circumvention table will be uploaded.
The upload has not been scheduled yet.

Daily plots of noise levels for each AIRS channel are available on the AIRS webpage at https://airs.jpl.nasa.gov/mission/instrument-operations/.
A link there currently points to where the files are hosted at https://thunder.jpl.nasa.gov/nedt_trends/html/airs_channel_nedt_trends.html.
For each channel there are plots for the whole AIRS mission and for the last 2 months.
Going forward, weekly Ops status updates will be archived at the same webpage above,
and are hosted at https://airsteam.jpl.nasa.gov/report/latest and https://airsteam.jpl.nasa.gov/report/archive/.


William Mathews  - AIRS Instrument Operations
NASA / Jet Propulsion Laboratory