Data Quality Reports for Session: 184357 User: solfm1 Completed: 03/18/2017


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected Data Quality Metric
D140618.2ENA/CPC/NEPH/PSAP/C1 - Impactor not installedenaaosuhsasC1.a1Does not affect quality
D140731.2ENA/UHSAS/C1 - Reprocess: Upper and lower size limit incorrectenaaosuhsasC1.a1Incorrect
D140926.3ENA/UHSAS/C1 - Computer FailureenaaosuhsasC1.a1Missing
D141216.3ENA/UHSAS/C1 - Problem with time fieldsenaaosuhsasC1.a1Suspect
D150506.2ENA/AOS/C1 - AOS Instrument Repair, Calibration and Modification: Mentor Site VisitenaaosuhsasC1.a1Incorrect
D150909.1ENA/UHSAS/C1 - Reprocess: Non-optimal bin sizesenaaosuhsasC1.a1Does not affect quality
D151214.1ENA/UHSAS/C1 - High counts on three lowest channelsenaaosuhsasC1.a1Suspect
D151228.1ENA/UHSAS/C1 - spikes in lower size binsenaaosuhsasC1.a1Suspect
D160107.1ENA/UHSAS/C1 - HEPA filter attached to inletenaaosuhsasC1.a1Incorrect
D160126.5ENA/UHSAS/C1 - Noisy counts / no countsenaaosuhsasC1.a1Incorrect
D160209.1ENA/UHSAS/C1 - High counts in lower binsenaaosuhsasC1.a1Suspect
D160211.2ENA/UHSAS/C1 - High counts in lower binsenaaosuhsasC1.a1Incorrect
D160223.1ENA/UHSAS/C1 - Intermittent spikes in the lowest channelsenaaosuhsasC1.a1Suspect
D160314.1ENA/UHSAS/C1 - High counts in the 3 lowest size binsenaaosuhsasC1.a1Suspect
D160319.1ENA/UHSAS/C1 - High counts in the 3 lowest size binsenaaosuhsasC1.a1Suspect
D160321.1ENA/UHSAS/C1 - High counts in 3 lowest size binsenaaosuhsasC1.a1Suspect
D160411.1ENA/UHSAS/C1 - Intermittent spikes in the lower size binsenaaosuhsasC1.a1Suspect
D160411.2ENA/UHSAS/C1 - Instrument not sampling ambient airenaaosuhsasC1.a1Incorrect
D160610.10ENA/UHSAS/C1 - High counts in lower size binsenaaosuhsasC1.a1Suspect
D160610.9ENA/UHSAS/C1 - missing dataenaaosuhsasC1.a1Missing
D161025.6ENA/AOS/C1 - Instrument mentors working at the siteenaaosuhsasC1.a1Suspect
D170303.12ENA/AOS/C1 - InstrumentenaaosuhsasC1.a1Does not affect quality


DQRID : D140618.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/01/2013000002/19/20141351Does not affect quality
Subject:
ENA/CPC/NEPH/PSAP/C1 - Impactor not installed
DataStreams:enaaosuhsasC1.a1
Description:
No impactor installed.  All data is the same as when impactor at 10 um setting.
Measurements:enaaosuhsasC1.a1:
  • scattering_voltage
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • sheath_flow
  • MET air temperature(temperature)
  • sampling_volume
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • upper_size_limit
  • flow
  • lower_size_limit
  • differential_voltage


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DQRID : D140731.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/17/2014145507/16/20141459Incorrect
Subject:
ENA/UHSAS/C1 - Reprocess: Upper and lower size limit incorrect
DataStreams:enaaosuhsasC1.a1
Description:
The lower size limit and upper size limit (99 bins) is incorrect because the values are 
not read from the header records.
Measurements:enaaosuhsasC1.a1:
  • lower_size_limit
  • upper_size_limit


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DQRID : D140926.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/17/2014150009/23/20142007Missing
Subject:
ENA/UHSAS/C1 - Computer Failure
DataStreams:enaaosuhsasC1.a1
Description:
The CPC unit for the UHSAS (and other systems) failed.  The UHSAS was down at this time 
and came back up after the CPC unit was fixed.
Measurements:enaaosuhsasC1.a1:
  • scattering_voltage
  • time
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • base_time
  • sheath_flow
  • MET air temperature(temperature)
  • Altitude above mean sea level(alt)
  • North latitude(lat)
  • sampling_volume
  • time_offset
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • lower_size_limit
  • upper_size_limit
  • flow
  • differential_voltage
  • East longitude(lon)
  • bin_num


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DQRID : D141216.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/17/2014145507/25/20161805Suspect
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:
  • scattering_voltage
  • time
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • base_time
  • sheath_flow
  • MET air temperature(temperature)
  • sampling_volume
  • time_offset
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • upper_size_limit
  • flow
  • lower_size_limit
  • differential_voltage
  • bin_num


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DQRID : D150506.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/22/2015170004/27/20151700Incorrect
Subject:
ENA/AOS/C1 - AOS Instrument Repair, Calibration and Modification: Mentor Site Visit
DataStreams:enaaosuhsasC1.a1
Description:
There was visit of 7 AOS instrument mentors to the ENA AOS during this period of 
instrument repair, calibration and modification. Instruments were occasionally off, or with no 
sample flow, or receiving calibration samples, etc. There was no productive sampling of 
ambient air during this period other than for testing. No data should be used for this period 
as ambient samples.

Note: Two datastream are missing. The CAPS Extinction Monitor and the Greenhouse gas 
instrument.
Measurements:enaaosuhsasC1.a1:
  • scattering_voltage
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • sheath_flow
  • MET air temperature(temperature)
  • sampling_volume
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • upper_size_limit
  • flow
  • lower_size_limit
  • differential_voltage
  • bin_num


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DQRID : D150909.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/20/2014160009/30/20152359Does not affect quality
Subject:
ENA/UHSAS/C1 - Reprocess: Non-optimal bin sizes
DataStreams:enaaosuhsasC1.a1
Description:
The UHSAS was programmed with a bin sizes appropriate to the aerial UHSAS. This is not 
really a problem. The bin sizes are not consistent with the other console UHSAS. The problem 
is in blindly comparing the data between the various UHSAS. This is not a problem of 
mislabeling or incorrect size bins. The data are correct for the stated size bins.
Measurements:enaaosuhsasC1.a1:
  • lower_size_limit
  • upper_size_limit


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DQRID : D151214.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/11/2015100112/12/20150058Suspect
12/10/2015111712/11/20150636Suspect
12/12/2015201712/13/20152100Suspect
12/08/2015173912/08/20152346Suspect
12/13/2015204112/14/20150903Suspect
Subject:
ENA/UHSAS/C1 - High counts on three lowest channels
DataStreams:enaaosuhsasC1.a1
Description:
High counts in the UHSAS three lowest channels. Probably a contamination (a fiber on the 
jet nozzle) inside the optical chamber. Rest of the channels should not be affected.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D151228.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/25/2015120012/28/20151540Suspect
Subject:
ENA/UHSAS/C1 - spikes in lower size bins
DataStreams:enaaosuhsasC1.a1
Description:
Intermittent spikes in the lowest 3 size bins. Probably a contamination that was cleared 
when a HEPA filter was installed for zero testing. Other bins should not be affected.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160107.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/30/2015190001/04/20161600Incorrect
Subject:
ENA/UHSAS/C1 - HEPA filter attached to inlet
DataStreams:enaaosuhsasC1.a1
Description:
HEPA filter was attached to the UHSAS inlet for troubleshooting the issues related to DQR 
D151228.1. No ambient measurements were made during this period.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160126.5
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/25/2016130001/26/20161745Incorrect
Subject:
ENA/UHSAS/C1 - Noisy counts / no counts
DataStreams:enaaosuhsasC1.a1
Description:
UHSAS was showing spikes in the lowest channels. An HEPA filter was attached to the inlet 
for troubleshooting. No valid data during the period with spikes and when the filter was 
attached.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160209.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/05/2016045302/05/20161445Suspect
Subject:
ENA/UHSAS/C1 - High counts in lower bins
DataStreams:enaaosuhsasC1.a1
Description:
High counts in the 3 lowest bins/channels. Possible contamination. Other bins should not 
be affected.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160211.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/10/2016134502/11/20161245Incorrect
Subject:
ENA/UHSAS/C1 - High counts in lower bins
DataStreams:enaaosuhsasC1.a1
Description:
High counts in the 4 lowest bins/channels. Possible contamination. Instrument set up to 
sample through a filter for troubleshooting. No valid data from the period.
Measurements:enaaosuhsasC1.a1:
  • scattering_voltage
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • sheath_flow
  • MET air temperature(temperature)
  • sampling_volume
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • upper_size_limit
  • flow
  • lower_size_limit
  • differential_voltage
  • bin_num


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DQRID : D160223.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/21/2016213402/21/20162238Suspect
02/22/2016012202/22/20160300Suspect
02/19/2016232702/20/20160249Suspect
02/21/2016055502/21/20160636Suspect
Subject:
ENA/UHSAS/C1 - Intermittent spikes in the lowest channels
DataStreams:enaaosuhsasC1.a1
Description:
Intermittent spikes in the 3 lowest size bins. Rest of the bins should be unaffected.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160314.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/12/2016031003/12/20160737Suspect
03/11/2016124603/11/20161542Suspect
03/13/2016142503/13/20161708Suspect
03/13/2016120603/13/20161240Suspect
Subject:
ENA/UHSAS/C1 - High counts in the 3 lowest size bins
DataStreams:enaaosuhsasC1.a1
Description:
High counts in the lowest 3 size bins. The rest of the bins should be unaffected.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160319.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/18/2016052503/18/20160735Suspect
Subject:
ENA/UHSAS/C1 - High counts in the 3 lowest size bins
DataStreams:enaaosuhsasC1.a1
Description:
High counts in the 3 lowest size bins. Other size bins should not be affected.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160321.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/20/2016045003/20/20160822Suspect
Subject:
ENA/UHSAS/C1 - High counts in 3 lowest size bins
DataStreams:enaaosuhsasC1.a1
Description:
High counts in the 3 lowest size bins. Other size bins should not be affected.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160411.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/28/2016220004/01/20162330Suspect
Subject:
ENA/UHSAS/C1 - Intermittent spikes in the lower size bins
DataStreams:enaaosuhsasC1.a1
Description:
Intermittent spikes in the 3 lowest size bins. Other size bins should not be affected.
Measurements:enaaosuhsasC1.a1:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160411.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
03/31/2016160004/01/20161025Incorrect
03/30/2016153003/30/20161900Incorrect
03/30/2016090003/30/20161100Incorrect
Subject:
ENA/UHSAS/C1 - Instrument not sampling ambient air
DataStreams:enaaosuhsasC1.a1
Description:
Instrument was periodically offline or not sampling ambient air for troubleshooting 
purposes. Data missing or no valid data.
Measurements:enaaosuhsasC1.a1:
  • scattering_voltage
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • base_time
  • sheath_flow
  • MET air temperature(temperature)
  • sampling_volume
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • upper_size_limit
  • flow
  • lower_size_limit
  • differential_voltage
  • bin_num


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DQRID : D160610.10
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/07/2016134006/08/20160200Suspect
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:
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)


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DQRID : D160610.9
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/06/2016221006/07/20161340Missing
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:
  • scattering_voltage
  • time
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • base_time
  • sheath_flow
  • MET air temperature(temperature)
  • Altitude above mean sea level(alt)
  • North latitude(lat)
  • sampling_volume
  • time_offset
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • lower_size_limit
  • upper_size_limit
  • flow
  • differential_voltage
  • East longitude(lon)
  • bin_num


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DQRID : D161025.6
Start DateStart TimeEnd DateEnd Time Data Quality Metric
09/26/2016083010/01/20160100Suspect
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:
  • scattering_voltage
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • sheath_flow
  • MET air temperature(temperature)
  • sampling_volume
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • upper_size_limit
  • flow
  • lower_size_limit
  • differential_voltage
  • bin_num


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DQRID : D170303.12
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/20/2016000003/03/20170000Does not affect quality
Subject:
ENA/AOS/C1 - Instrument
DataStreams:enaaosuhsasC1.a1
Description:
Pentras dry air supply intermittently not working. Dry air missing for the humidigraph and 
the HT-DMA. Dry air supply for those instruments partially replaced by regular undried 
compressed air, lowering the delivery pressure. No direct effect on other instruments seen.
Measurements:enaaosuhsasC1.a1:
  • scattering_voltage
  • time
  • Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
  • base_time
  • sheath_flow
  • MET air temperature(temperature)
  • Altitude above mean sea level(alt)
  • North latitude(lat)
  • sampling_volume
  • time_offset
  • purge_flow
  • unit_temperature
  • auxiliary
  • reference
  • current
  • sample_pressure
  • lower_size_limit
  • upper_size_limit
  • flow
  • differential_voltage
  • bin_num
  • East longitude(lon)


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