| DQR ID | Subject | Affected Data Streams | Data Quality Metric |
|---|---|---|---|
| D130903.5 | NSA/TSI/C1 - Camera misaligned | nsatsiskycoverC1.b1 | Suspect |
| D140806.1 | NSA/TSI/C1 - Obstruction | nsatsiskycoverC1.b1 | Incorrect |
| D080331.3 | NSA/TSI/C1 - frost/condensation in lens | nsatsiskycoverC1.b1 | Suspect |
| D170301.4 | NSA/TSI/C1 - Reprocess: Global attribute units incorrect for cam_mir_dist | nsatsiskycoverC1.b1 | Incorrect |
| D160718.2 | NSA/ECOR/TSI/C1/E10 - Data Missing | nsatsiskycoverC1.b1 | Missing |
| D130703.2 | NSA/TSI/C1/X1 - data processing problem | nsatsiskycoverX1.b1 | Note |
| D090302.1 | NSA/TSI/C1 - Mirror frozen | nsatsiskycoverC1.b1 | Incorrect |
| D160401.1 | NSA/TSI/C1 - frost on lens | nsatsiskycoverC1.b1 | Incorrect |
| D160404.5 | NSA/TSI/C1 - Reprocessed and Corrected: Sky filter thresholds | nsatsiskycoverC1.b1 | Reprocessed |
| D070608.2 | NSA/TSI/C1 - camera lens covered | nsatsiskycoverC1.b1 | Incorrect |
| D111006.2 | NSA/TSI/C1 - Reprocessed and Corrected: Ingest Problem | nsatsiskycoverC1.b1 | Reprocessed |
| D130424.5 | NSA/TSI/C1 - Mirror contamination | nsatsiskycoverC1.b1 | Suspect |
| D121025.4 | NSA/TSI/C1 - Water on lens | nsatsiskycoverC1.b1 | Suspect |
| D150428.1 | NSA/TSI/C1 - Communication | nsatsiskycoverC1.b1 | Missing |
| D160422.1 | NSA/TSI/C1 - Condensation on lens | nsatsiskycoverC1.b1 | Suspect |
| D130807.3 | NSA/TSI/C1 - Reprocessing Notice (RID 951) | nsatsiskycoverC1.b1 | Note |
| D170805.1 | NSA/TSI/C1 - Reprocess: Serial number incorrect | nsatsiskycoverC1.b1 | Note |
| D070608.3 | NSA/TSI/C1 - shadowband misaligned | nsatsiskycoverC1.b1 | Suspect |
| D150408.4 | NSA/TSI/C1 - Shadowband misalignment | nsatsiskycoverC1.b1 | Suspect |
| D160824.11 | NSA/TSI/C1 - Re-installation | nsatsiskycoverC1.b1 | Incorrect |
| D130503.2 | NSA/TSI/C1 - Reprocessed and Corrected: Recalibration | nsatsiskycoverC1.b1 | Note |
| D140827.1 | NSA/TSI/C1 - Obstruction | nsatsiskycoverC1.b1 | Suspect |
| D170216.22 | NSA/TSI/C1- winter season | nsatsiskycoverC1.b1 | Missing |
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2013-06-24 | 22:46:00 | 2013-08-29 | 22:05:00 | Suspect |
| Subject: | NSA/TSI/C1 - Camera misaligned |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The camera lens was not centered over the middle of mirror. The position of the camera enclosure was adjusted. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2014-07-31 | 00:37:00 | 2014-07-31 | 03:11:00 | Incorrect |
| Subject: | NSA/TSI/C1 - Obstruction |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The electrical tape serving as a drip edge for the camera housing came loose and blocked the view of the camera. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2008-03-07 | 00:00:00 | 2008-04-08 | 23:27:00 | Suspect |
| Subject: | NSA/TSI/C1 - frost/condensation in lens |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The sky image appeared hazy and was corrected by cleaning the neutral-density filter and lens of the camera. The determination of cloud fraction may be affected. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-04-25 | 00:00:00 | 2017-01-20 | 23:59:59 | Incorrect |
| Subject: | NSA/TSI/C1 - Reprocess: Global attribute units incorrect for cam_mir_dist |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The global attribute cam_mir_dist was converted incorrectly. The raw camera.mirror.distance, in inches, was multiplied by 10 and assigned a unit of mm. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-07-12 | 15:10:30 | 2016-07-15 | 00:00:00 | Missing |
| Subject: | NSA/ECOR/TSI/C1/E10 - Data Missing |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | Site data systems were being upgraded during this time. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2005-03-30 | 00:00:00 | 2013-10-19 | 23:59:00 | Note |
| Subject: | NSA/TSI/C1/X1 - data processing problem |
|---|---|
| Affected Datastreams: | nsatsiskycoverX1.b1 |
| Description | Values of count_opaque and count_thin are reals but should be integers (units = pixels). |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2009-02-28 | 18:13:00 | 2009-02-28 | 21:25:00 | Incorrect |
| Subject: | NSA/TSI/C1 - Mirror frozen |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The mirror was not rotating so the shadowband was not masking the sun. This appears to have been caused by snow that was melted by the mirror heater and then re-frozen by high, cold winds. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-03-27 | 15:57:00 | 2016-03-31 | 00:21:00 | Incorrect |
| Subject: | NSA/TSI/C1 - frost on lens |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The camera lens window was covered with frost because the thermal pad in camera housing was not powered on. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-03-14 | 19:58:00 | 2016-05-06 | 22:16:59 | Reprocessed |
| Subject: | NSA/TSI/C1 - Reprocessed and Corrected: Sky filter thresholds |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | DATA REPROCESSED and CORRECTED: The sky filter thresholds were incorrect causing poor fractional cloud cover values. The filter thresholds thin_thresh was changed from 45 to 50 and opaque_thresh was changed from 70 to 90. The data were reprocessed and archived in July 2017. Please retrieve the reprocessed data for use in your analysis. You may find these data using the ARM Discovery tool at the following link: http://www.archive.arm.gov/discovery/#v/results/s/finst::tsi/ffac::nsa.C1 ORIGINAL DQR CATEGORY: Red-Incorrect REPROCESSED and CORRECTED DATA ARCHIVED: 2017-07 REPROCESS IDENTIFICATION NUMBER: RID 1456 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- The sky filter thresholds are incorrect causing poor fractional cloud cover values. The cldmask images and fractional sky cover values will be reprocessed by changing the sky filter thresholds thin_thresh from 45 to 50 and opaque_thresh from 70 to 90. --------------------------------------------------- --- ORIGINAL DQR SUGGESTIONS --- --------------------------------------------------- Do not use data. Wait for reprocessed data. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2007-04-13 | 21:31:00 | 2007-04-20 | 18:26:00 | Incorrect |
| Subject: | NSA/TSI/C1 - camera lens covered |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The shadowband was not properly masking the sun so the camera lens was covered on 4/13 to prevent damage to the CCD. On 4/20, the mirror was blown off by a snow storm and the instrument was brought inside for repair. The mirror was replaced, the lens uncovered, and the instrument reinstalled. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-11-11 | 16:50:00 | 2011-10-20 | 18:32:00 | Reprocessed |
| Subject: | NSA/TSI/C1 - Reprocessed and Corrected: Ingest Problem |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | DATA REPROCESSED and CORRECTED: An error was made with diagnostic attribute sunny_thresh when the TSI ingest was updated. The raw value was manipulated as follows: sunny_thresh = (threshold.sunny-1) * 100. The raw data were run through the ingest to correct the addressed issue. The data were archived in July 2017. Please retrieve the reprocessed data for use in your analysis. You may find these data using the ARM Discovery tool at the following link: http://www.archive.arm.gov/discovery/#v/results/s/finst::tsi/ffac::nsa.C1 ORIGINAL DQR CATEGORY: Transparent - Note REPROCESSED and CORRECTED DATA ARCHIVED:2017-07 REPROCESS IDENTIFICATION NUMBER: RID 718 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- A minor error was made with diagnostic metadata attribute sunny_thresh when the TSI ingest was updated. --------------------------------------------------- --- ORIGINAL DQR SUGGESTIONS --- --------------------------------------------------- The value should be sunny_thresh = (threshold.sunny-1) * 100. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2011-05-24 | 17:37:00 | 2011-05-31 | 17:41:00 | Suspect |
| Subject: | NSA/TSI/C1 - Mirror contamination |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The surface of the chrome mirror was soiled causing the cloud fraction determination to be unreliable. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2011-03-09 | 01:08:00 | 2012-10-24 | 21:59:00 | Suspect |
| Subject: | NSA/TSI/C1 - Water on lens |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | After a rain episode, drops of water collected on the lens window causing the cloud fraction values to be suspect. To prevent this, a drip edge was formed around the bottom of the enclosure with thick electrical or splicing tape. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-04-13 | 21:35:00 | 2015-04-27 | 23:02:00 | Missing |
| Subject: | NSA/TSI/C1 - Communication |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | A software communication error occurred with the camera. The problem was corrected by power-cycling the instrument. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-04-05 | 15:12:00 | 2016-04-14 | 18:23:00 | Suspect |
| Subject: | NSA/TSI/C1 - Condensation on lens |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The images and fractional sky cover values are affected by moisture inside the camera housing. The desiccant was added. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2010-08-01 | 00:00:00 | 2013-10-21 | 23:59:00 | Note |
| Subject: | NSA/TSI/C1 - Reprocessing Notice (RID 951) |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | See below for details of reprocessing that was completed on 20140922. Original DQR category: 5 (Transparent - Does not affect quality). ----------------------------------------------------------- The units of global attributes region_sun_radius and region_zenith_radius should be degrees, not pixels. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2006-04-25 | 21:43:00 | 2017-07-28 | 23:21:59 | Note |
| Subject: | NSA/TSI/C1 - Reprocess: Serial number incorrect |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The serial_number global attribute is incorrect. The correct serial number for this period is 101A. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2007-03-26 | 16:06:00 | 2007-04-13 | 21:30:00 | Suspect |
| Subject: | NSA/TSI/C1 - shadowband misaligned |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | At several times during this period the shadowband did not mask the sun because the mirror was not properly secured. Attempts were made to align the mirror on 4/2, 4/3, and 4/10. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2015-03-18 | 00:00:00 | 2015-04-07 | 22:27:00 | Suspect |
| Subject: | NSA/TSI/C1 - Shadowband misalignment |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The shadowband was slightly misaligned. When the TSI was reinstalled after the Arctic night, communication with the mirror control board was not re-established and the time of the board's RTC was 56m 55s slow. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-03-12 | 00:28:30 | 2016-03-14 | 19:58:59 | Incorrect |
| Subject: | NSA/TSI/C1 - Re-installation |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The TSI required maintenance and configuration after being re-installed after winter. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-02-14 | 23:54:00 | 2012-02-16 | 10:10:00 | Note |
| Subject: | NSA/TSI/C1 - Reprocessed and Corrected: Recalibration |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | DATA REPROCESSED and CORRECTED: The sky filter thresholds were not set correctly during this time. The data has been re-filtered and processed to create the correct data. The data were archived November 2016. Please retrieve the reprocessed data for use in your analysis. You may find these data using the ARM Discovery tool at the following link: http://www.archive.arm.gov/discovery/#v/results/s/finst::tsi/fsite::nsa/ffac::nsa.C1 ORIGINAL DQR CATEGORY: Red (Incorrect) REPROCESSED and CORRECTED DATA ARCHIVED:2016-11 REPROCESS IDENTIFICATION NUMBER: RID 924 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- The processed image and cloud fraction determination were incorrect because the clear/thin threshold was set too high. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2014-07-31 | 04:25:00 | 2014-07-31 | 18:56:59 | Suspect |
| Subject: | NSA/TSI/C1 - Obstruction |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The electrical tape serving as a drip edge for the camera housing came loose and was in the zenith view of the camera. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2016-11-10 | 00:00:00 | 2017-02-07 | 20:11:00 | Missing |
| Subject: | NSA/TSI/C1- winter season |
|---|---|
| Affected Datastreams: | nsatsiskycoverC1.b1 |
| Description | The TSI was shutdown and removed for the winter solar night. |
| Measurements |
|