DQR ID | Subject | Data Streams Affected | Data Quality Metric |
---|---|---|---|
D141216.3 | ENA/UHSAS/C1 - Problem with time fields | enaaosuhsasC1.a1 | Suspect |
D160610.10 | ENA/UHSAS/C1 - High counts in lower size bins | enaaosuhsasC1.a1 | Suspect |
D160610.9 | ENA/UHSAS/C1 - missing data | enaaosuhsasC1.a1 | Missing |
D161025.6 | ENA/AOS/C1 - Instrument mentors working at the site | enaaosuhsasC1.a1 | Suspect |
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
02/17/2014 | 1455 | 07/25/2016 | 1805 | Suspect |
Subject: | ENA/UHSAS/C1 - Problem with time fields |
DataStreams: | enaaosuhsasC1.a1 |
Description: | During the ENA deployment, the UHSAS instrument clock was not synced with a time server. I used a comparison of the peaks in the UHSAS data and the CPC or the PSAP data to determine how far off the clock was. The UHSAS was always within ~2 minutes of the other instruments and the CPU it was attached to. Starting from 2/18/2014 the UHSAS was ~ 45 seconds. slow. It gradually got faster and around 6/2014 it was within seconds of the CPC. It continued in that direction and gradually became slower than the CPC or PSAP. On 1/22/2015 the UHSAS was ~120 seconds slower than the PSAP. At 16:05:00 1/22/2015 the UHSAS time was manually set to the Unit 2 CPU time. This was done remotely and apparantly only to within about 20 seconds. A Document shows the times of the peaks used to determine the time difference. During 2015 until the Domain time II was installed on 07/25/2016 the UHSAS was synced manually about once a month. Between syncs it generally drifted slow. During the period until 06/24/2015 the monthly correction was less than 20 seconds. There was a gap in the corrections and on 10/21/2015 it was corrected from 1 minute 22 seconds slow. The corrections after that were from about 15 to 35 seconds slow. The first time sync after Domain time II was installed corrected the time from 1 minute 12 seconds slow. |
Measurements: | enaaosuhsasC1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
06/07/2016 | 1340 | 06/08/2016 | 0200 | Suspect |
Subject: | ENA/UHSAS/C1 - High counts in lower size bins |
DataStreams: | enaaosuhsasC1.a1 |
Description: | High counts in the 3 lowest size bins. Other size bins should not be affected. |
Measurements: | enaaosuhsasC1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
06/06/2016 | 2210 | 06/07/2016 | 1340 | Missing |
Subject: | ENA/UHSAS/C1 - missing data |
DataStreams: | enaaosuhsasC1.a1 |
Description: | Instrument's internal hard drive was full and no new data was being saved except a few samples occasionally. |
Measurements: | enaaosuhsasC1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
09/26/2016 | 0830 | 10/01/2016 | 0100 | Suspect |
Subject: | ENA/AOS/C1 - Instrument mentors working at the site |
DataStreams: | enaaosuhsasC1.a1 |
Description: | Instrument mentors working at the site. Sample lines and electrical connections being reconfigured. Instruments that had no work done on them may still be affected. |
Measurements: | enaaosuhsasC1.a1:
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