Improve ACA header 3 decom support

[taldcroft]

Description

This PR gives the aca_hdr3.py module a modernization refresh and improves the functionality:

• Remove use of masked arrays since there is not any missing data.
• Change unit of voltage MSIDs from mV to V.
• Fix ccd_setpoint to be in degC.
• Refactor code so that the MSID class does the work and the MSIDset class is a thin wrapper supporting multiple MSIDs.
• Support decoding the HDR3 telemetry containing the four 16-bit quadrant zero-offset values.
• Add a validation notebook that makes a plot of all the supported MSIDs.

Interface impacts

Testing

Unit tests

• Mac

The failures below are unrelated and seem to indicate that the tests for skipping are not quite working.

(ska3) ➜  mica git:(support-read-quad-zero-offsets) git rev-parse --short HEAD
0d12953
(ska3) ➜  mica git:(support-read-quad-zero-offsets) pytest
========================================== test session starts ==========================================
platform darwin -- Python 3.12.8, pytest-8.3.4, pluggy-1.5.0
rootdir: /Users/aldcroft/git
configfile: pytest.ini
plugins: anyio-4.7.0, timeout-2.3.1
collected 117 items                                                                                     

mica/archive/tests/test_aca_dark_cal.py ..................                                        [ 15%]
mica/archive/tests/test_aca_hdr3.py ..                                                            [ 17%]
mica/archive/tests/test_aca_l0.py ...FF                                                           [ 21%]
mica/archive/tests/test_asp_l1.py FFFFFsF                                                         [ 27%]
mica/archive/tests/test_cda.py ..................................................                 [ 70%]
mica/archive/tests/test_obspar.py .                                                               [ 70%]
mica/report/tests/test_report.py ss                                                               [ 72%]
mica/report/tests/test_write_report.py s                                                          [ 73%]
mica/starcheck/tests/test_catalog_fetches.py ...............                                      [ 86%]
mica/stats/tests/test_acq_stats.py .ss                                                            [ 88%]
mica/stats/tests/test_guide_stats.py .sss                                                         [ 92%]
mica/vv/tests/test_vv.py ssssFFFFF                                                                [100%]

=============================================== FAILURES ================================================

Independent check of unit tests by Jean

• Linux

(ska3-latest) jeanconn-kady> pytest
======================================================================== test session starts =========================================================================
platform linux -- Python 3.13.11, pytest-9.0.2, pluggy-1.6.0
rootdir: /proj/sot/ska/jeanproj/git
configfile: pytest.ini
plugins: timeout-2.4.0, anyio-4.12.1
collected 117 items                                                                                                                                                  

mica/archive/tests/test_aca_dark_cal.py ..................                                                                                                     [ 15%]
mica/archive/tests/test_aca_hdr3.py ..                                                                                                                         [ 17%]
mica/archive/tests/test_aca_l0.py .....                                                                                                                        [ 21%]
mica/archive/tests/test_asp_l1.py .......                                                                                                                      [ 27%]
mica/archive/tests/test_cda.py ..................................................                                                                              [ 70%]
mica/archive/tests/test_obspar.py .                                                                                                                            [ 70%]
mica/report/tests/test_report.py ..                                                                                                                            [ 72%]
mica/report/tests/test_write_report.py .                                                                                                                       [ 73%]
mica/starcheck/tests/test_catalog_fetches.py ...............                                                                                                   [ 86%]
mica/stats/tests/test_acq_stats.py ...                                                                                                                         [ 88%]
mica/stats/tests/test_guide_stats.py ....                                                                                                                      [ 92%]
mica/vv/tests/test_vv.py .........                                                                                                                             [100%]

========================================================================== warnings summary ==========================================================================
mica/mica/archive/tests/test_asp_l1.py::test_update_l1_archive
  /export/jeanconn/miniforge3/envs/ska3-latest/lib/python3.13/pty.py:95: DeprecationWarning: This process (pid=1697319) is multi-threaded, use of forkpty() may lead to deadlocks in the child.
    pid, fd = os.forkpty()

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
============================================================= 117 passed, 1 warning in 368.31s (0:06:08)

Functional tests

Plots included in the new validation notebook.

[jeanconn]

I note there's some weirdness with the day 163 data as read by the hdr3 code, but this isn't a regression

[jeanconn]

I'm not as sure about the 2^15 offset which isn't described in the documentation afaict, but since the point is to have something reasonable and this matches the values from MB, this seems good to me.