DQR ID | Subject | Affected Data Streams | Data Quality Metric |
---|---|---|---|
D141211.1 | SGP/CCN/C1 - Incorrect temperature gains or settings | sgpaosccnavgC1.c1 | Incorrect |
D141017.5 | SGP/CCN/C1 - Incorrect supersaturation stepping method | sgpaosccnavgC1.c2 | Incorrect |
D150413.1 | SGP/CCN/C1 - Removed for calibration | sgpaosccnavgC1.c2 | Missing |
D140205.4 | SGP/CCN/C1 - CCN shutdown for repair | sgpaosccnavgC1.c2 | Missing |
D140929.3 | SGP/CCN/C1 - Frequent power and communication loss problems | sgpaosccnC1.a1 | Does not affect quality |
D140929.5 | SGP/CCN/C1 - CCN presure sensor failure | sgpaosccnavgC1.c2 | Incorrect |
D150306.2 | SGP/CCN/C1 - Instrument under counting at lowest super saturation value | sgpaosccnavgC1.c1 | Suspect |
D141208.1 | SGP/CCN/C1 - CCN signal is low from possible leak and decline in laser power | sgpaosccnC1.a1 | Suspect |
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2007-05-22 | 22:00:00 | 2007-10-23 | 15:15:00 | Incorrect |
Subject: | SGP/CCN/C1 - Incorrect temperature gains or settings |
---|---|
Affected Datastreams: | sgpaosccnavgC1.c1 |
Description | New software was installed with instrument and temperature gains didn't transfer correctly. Super saturation values are incorrect and instrument tended to overheat in an attempt to reach set point values. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2012-11-30 | 00:00:00 | 2013-06-11 | 23:59:00 | Incorrect |
Subject: | SGP/CCN/C1 - Incorrect supersaturation stepping method |
---|---|
Affected Datastreams: | sgpaosccnavgC1.c2 |
Description | The supersaturation stepping method over this period is not consistent with the ccnavg VAP expectations. Therefore, the averaging of the fields done by the CCNAVG VAP are incorrect - the output of the CCNAVG VAP for all fields is bad over this entire period. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2014-11-11 | 07:00:00 | 2015-03-15 | 20:45:00 | Missing |
Subject: | SGP/CCN/C1 - Removed for calibration |
---|---|
Affected Datastreams: | sgpaosccnavgC1.c2 |
Description | Instrument was removed for calibration and scanning evaluation. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2013-10-04 | 15:30:00 | 2013-10-19 | 01:00:00 | Missing |
Subject: | SGP/CCN/C1 - CCN shutdown for repair |
---|---|
Affected Datastreams: | sgpaosccnavgC1.c2 |
Description | A thermal electric cooler (TEC) was found to be not working. The instrument was shutdown until the TEC could be replaced. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2014-06-12 | 06:14:00 | 2014-07-15 | 22:50:00 | Does not affect quality |
Subject: | SGP/CCN/C1 - Frequent power and communication loss problems |
---|---|
Affected Datastreams: | sgpaosccnC1.a1 |
Description | There were frequent power and communication losses over the time period. The problem was resolved after power was redistributed and all data acquisition components were replaced. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2014-07-15 | 22:50:00 | 2014-08-12 | 14:00:00 | Incorrect |
Subject: | SGP/CCN/C1 - CCN presure sensor failure |
---|---|
Affected Datastreams: | sgpaosccnavgC1.c2 |
Description | Sheath flow reading declined and couldn't be adjusted. Unit was shipped back to mentor for repair and calibration. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2013-06-11 | 19:26:00 | 2015-04-08 | 17:30:00 | Suspect |
Subject: | SGP/CCN/C1 - Instrument under counting at lowest super saturation value |
---|---|
Affected Datastreams: | sgpaosccnavgC1.c1 |
Description | The slow temperature decay of the OPC induced droplet evaporation and caused an under counting of the droplets at the lowest %ss, 0.15. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2009-05-15 | 16:00:00 | 2009-08-03 | 00:00:00 | Suspect |
Subject: | SGP/CCN/C1 - CCN signal is low from possible leak and decline in laser power |
---|---|
Affected Datastreams: | sgpaosccnC1.a1 |
Description | CCN was returned with new laser. Signal was unusually low and flow calibration had changed substantially. A leak is suspect as well as declining laser power as new laser was defective. |
Measurements |
|