Data Quality Reports for Session: 141316 User: yongjia1so Completed: 03/21/2012

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D110811.6PGH/TSI/M1 - Obstructed field of viewpghtsiM1.00, pghtsicldmaskM1.a1, pghtsimovieM1.a1, pghtsiskycoverM1.b1,
pghtsiskyimageM1.a1
D110830.5PGH/TSI/M1 - Reprocess: Truncated start of daily moviepghtsimovieM1.a1


DQRID : D110811.6
Start DateStart TimeEnd DateEnd Time
06/24/2011000007/15/20110359
Subject:
PGH/TSI/M1 - Obstructed field of view
DataStreams:pghtsiM1.00, pghtsicldmaskM1.a1, pghtsimovieM1.a1, pghtsiskycoverM1.b1,
pghtsiskyimageM1.a1
Description:
The TSI was located in an obstructed view location for the beginning of the deployment.  
Trees and the AMF VANs are within the field of view of the instrument and appears to have 
affected the data processing.  On 7/15/2011 the instrument was moved.
Measurements:pghtsicldmaskM1.a1:
  • Cloud decision images, Total Sky Imager, PNG format(png)
pghtsiM1.00:
  • Raw data stream - documentation not supported
pghtsiskycoverM1.b1:
  • region_sun_count_opaque
  • count_mask
  • count_sub_horz
  • count_sky
  • Sunshine Meter(sunny)
  • count_opaque
  • region_sun_count
  • region_horizon_count_thin
  • count_sub_proczen
  • count_thin
  • region_zenith_count
  • Cloud amount, thin (percent)(percent_thin)
  • region_sun_count_thin
  • sun_strength
  • count_box
  • region_horizon_count_opaque
  • region_horizon_count
  • region_zenith_count_thin
  • Cloud amount, opaque (percent)(percent_opaque)
  • region_zenith_count_opaque
  • count_unknown
pghtsiskyimageM1.a1:
  • JPEG data stream - documentation not yet available
pghtsimovieM1.a1:
  • MPEG data stream - documentation not yet available

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DQRID : D110830.5
Start DateStart TimeEnd DateEnd Time
07/16/2011000007/19/20111337
Subject:
PGH/TSI/M1 - Reprocess: Truncated start of daily movie
DataStreams:pghtsimovieM1.a1
Description:
The TSI names the daily tsimovie file with the UTC date in which the sun rises and the 
file begins. At PGH in the summer, the sun rises just before 00:00 (earliest sunrise is at 
23:41) so the daily movie should start and the file be named with the date that is prior 
to much of the remainder of the file. 

The TSI at PGH was set to start automatically each morning at 23:58 UTC but it should have 
been set to start about 20 minutes earlier. Therefore, sky images for the first few 
minutes of each day through 7/19, when the sun began rising after 23:58, were not collected. 

On 8/26, the times of the scheduled tasks were adjusted to those that should have been 
used from the beginning of deployment.

Since only a maximum of three images were collected prior to 00:00 UTC each day, it will 
be less confusing for data users if these images were removed from the daily movie files 
through 7/19. 

Reprocessing has been requested.  In the meantime, the pghtsimovieM1.a1 files have been 
renamed to reflect the date the bulk of the data represents.
Measurements:pghtsimovieM1.a1:
  • MPEG data stream - documentation not yet available

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