Add filter to discard spurious detections with very low FRP and high TB(I-Band 4) #22
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Signed-off-by: Adam.Dybbroe <a000680@c22526.ad.smhi.se>
…ed by high energy radiation in the sensor Signed-off-by: Adam.Dybbroe <a000680@c22526.ad.smhi.se>
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…K in order to reject the detection as a spurious one Signed-off-by: Adam.Dybbroe <a000680@c22526.ad.smhi.se>
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This PR add a sanity check on the Active Fires data so as to remove any spurious detections where the I-band 4 TB is very high but the M-band based FRP is very low. These data indicate a glitch onboard known to affect the I-Band number 4 over the SAA (South Atlantic magnetic Anamoly) zone, but also can happen elsewhere. See figure below.
The filtering is applied after the national shapefile filtering.
pytestflake8Below is an example of known errors that is supposed to be filtered out with the new check.
The points far to the right (TB=367 K - saturation) is from the outgassing event of NOAA-21 end of February 2024
The new sanity-check introduced in this PR will reject detections as spurious where the TB(I-band 4)/FRP is greater than 1000 and the TB(I-band 4) is greater than 310 K.