Data Quality Reports for Session: 123480 User: dmfoper Completed: 10/07/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040209.2NSA/TWRCAM/C2 - Reflection on image during darknessnsatwrcam3mC2.a1
D070203.3TWP/TSI/C2 - hazy imagetwptsicldmaskC2.a1, twptsimovieC2.a1, twptsiskycoverC2.b1, twptsiskyimageC2.a1


DQRID : D040209.2
Start DateStart TimeEnd DateEnd Time
04/02/2002000006/30/20042359
Subject:
NSA/TWRCAM/C2 - Reflection on image during darkness
DataStreams:nsatwrcam3mC2.a1
Description:
During darkness, there appears to be a green light on the ground about 7 meters from the 
tower the camera is pointing at.  We have deduced that this is, in fact, a reflection of a 
LED behind the camera in its housing.  This spring, the camera will be slid forward 
towards the enclosure window eliminating this reflection.

Since the images are of minimal use during darkness, this DQR is being submitted to 
explain the existence of the reflection.
Measurements:nsatwrcam3mC2.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

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DQRID : D070203.3
Start DateStart TimeEnd DateEnd Time
01/11/2007190002/13/20070447
Subject:
TWP/TSI/C2 - hazy image
DataStreams:twptsicldmaskC2.a1, twptsimovieC2.a1, twptsiskycoverC2.b1, twptsiskyimageC2.a1
Description:
Condensation in the camera lens and/or filter caused the sky images to be "hazy". The 
desiccant in the main enclosure was changed and the neutral density filter was cleaned.
Measurements:twptsicldmaskC2.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC2.b1:
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Solar azimuth angle(solar.azimuth)
  • lon(lon)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Sunshine meter(sunny)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • lat(lat)
  • Sun altitude above horizon(solar.altitude)
  • Dummy altitude for Zeb(alt)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number total in sun circle(region.sun.count)
  • base time(base_time)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Time offset of tweaks from base_time(time_offset)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number total opaque(count.opaque)
twptsiskyimageC2.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsimovieC2.a1:
  • (MPEG data stream - documentation not yet available)

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