Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
03/27/2015 | 1853 | 06/21/2016 | 1759 | Incorrect |
Subject: | SGP/MFRSR/E37 - Reprocess: Bad Cosine Data |
DataStreams: | sgpmfrsrE37.b1, sgpmfrsrlangleyE37.c1, sgpmfrsrauxE37.a0, sgpmfrsrlangplotE37.c1, sgpmfrsrE37.a0, sgpmfrsrE37.00 |
Description: | A bad cosine (impacting channel 415) went into use on 20150327. The bad cosine run was performed on 20150326. This was discovered in late 2015 when the DQ office noticed that channel 415 was behaving differently from the other channels. We tried recharacterizing the head on 20160216, but it didn't help. The second attempt at re-characterization was made on 20160525 and that was successful. To resolve this problem some combination of new cal info with old cal info is used based on the mentor's best judgement for each calibration file set. Even though the problem is with 415, new cosine data are being applied to all the channels. Pulling out just 415 was deemed unnecessarily complicated. This process will be essentially negligible for the other channels. The raw data produced from a full head characterization are: - Standard Lamp - Filter Function - Cosine Response - Diffuse Correction (Calculated from Cosine Response) 20150327 Cal Set Head ABB70FA processes: 20150327_185220 to 20151102_235940 - Lamp 20150326 - Filter 20150327 - Cosine 20160525 - Diffuse 20160525 20151103 Cal Set (The headID reverted back to correct) Head ABB70FA processes: 20151103_000000 to 20160211_155800 - Lamp 20150326 - Filter 20150327 - Cosine 20160525 - Diffuse 20160525 20160211 Cal Set (A spare head was temporarily installed) Head ABC9F8E processes: 20160211_155900 to 20160310_155940 20160310 Cal Set (Original head reinstalled) Head ABB70FA processes: 20160310_170000 to 20160318_165940 NOTE: Raw data hour 16Z on 20160310 must be removed for data to process due to the spare head being installed. - Lamp 20160525 - Filter 20160525 - Cosine 20160525 - Diffuse 20160525 20160318 Cal Set (Power cycled the system for proper headID read) Head ABB70FA processes: 20160318_180000 to current NOTE: The original head was reinstalled on 20160310 without powering down the system. This caused a headID mismatch and hour 17Z on 20160318 must be removed for the data to process. - Lamp 20160525 - Filter 20160525 - Cosine 20160525 - Diffuse 20160525 |
Suggestions: | Do not use data. Wait for reprocessed data. |
Measurements: | sgpmfrsrlangleyE37.c1: more
sgpmfrsrE37.b1: more sgpmfrsrE37.a0: more sgpmfrsrE37.00: more sgpmfrsrauxE37.a0: more sgpmfrsrlangplotE37.c1: more |