Adjust initialization of the total quality index (qi_total)

[guntherhaase]

Currently, qi_total is initialized with "0". If no additional quality control is applied, this prevents e.g. NWP from using the corresponding quantity. Hence, qi_total needs to be initialized with "1".

[MikoKNMI]

For NIMBUS it is now SOLVED and being TESTED at GeoSphere.

SOLUTION for qi-total problem in BALTRAD

In NIMBUS we have identified and solved a serious bug in BALTRAD.
The primary problem has been identified here: rave_qitotal_quality_plugin.py

This file has not been touched in the last 5 years.
https://github.com/baltrad/rave/blob/master/Lib/rave_qitotal_quality_plugin.py

For NIMBUS we had to modify this file this way and this is the solution:

https://github.com/opera-radar/opera-nimbus-test-env/blob/master/toolbox/nimbus-rave/Lib/rave_qitotal_quality_plugin.py

This is the full commit:
https://github.com/opera-radar/opera-nimbus-test-env/commit/de0ec35cdd60cd1f194b5ec23439d9ad4a28c0e0#diff-44a71e4224fa00d2e658ebb0b790812034e98bca00e1cc0b51ff7d6ae7d8c5e4

This is the problematic spot:
https://github.com/opera-radar/opera-nimbus-test-env/commit/de0ec35cdd60cd1f194b5ec23439d9ad4a28c0e0#diff-44a71e4224fa00d2e658ebb0b790812034e98bca00e1cc0b51ff7d6ae7d8c5e4L85

    if nr_qitotal_fields > 0:
      if hasattr(qitotal, QITOTAL_METHOD):
        method = getattr(qitotal, QITOTAL_METHOD)
        result = method(qitotalfields)
        scan.addOrReplaceQualityField(result)

Now ALL NIMBUS QC-PVOL files contain qi-total quality field. Even the radar data from sources which are only treated with "distance,scansun,qi-total".
Note that "distance,scansun" filters do leave traces (quality fields) in the HDF data so qi-total filter does not see them and the BALTRAD BUG was not creating even an empty qi-total quality field.

This is now SOLVED.

Testing details below.

1. Testing node=plgda; QC-FILTERS based on modules_by_radar.xml: <plgda modules="distance,scansun,qi-total"></plgda>
   Quality-fields: node=plgda; scan_qc_list=[] before computing qi-total.

2. Testing node=nosta; QC-FILTERS based on modules_by_radar.xml: <nosta modules="distance,scansun,qi-total"></nosta>
   Quality-fields: node=nosta; scan_qc_list=['no.met.prorad.qi_total', 'no.met.prorad.beamblockage'] before computing qi-total.

3. Testing node=nldhl; QC-FILTERS based on modules_by_radar.xml: <default modules="distance,scansun,hac-increment,ropo,beamb,satfilter,hac-filter, qi-total"></default>

   Quality-fields: node=nldhl; scan_qc_list=['fi.fmi.ropo.detector.classification', 'se.smhi.detector.beamblockage', 'fr.mf.satfilter'] before computing qi-total.

Full testing-report can be found here:

https://github.com/opera-radar/opera-nimbus-test-env/blob/master/testing/NIMBUS-qc-qi-total-prod-testing-2024-06.md