Data Quality Reports for Session: 107818 User: ql_data Completed: 09/17/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060915.2TWP/TSI/C1 - solar shadowband inoperativetwptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D070203.3TWP/TSI/C2 - hazy imagetwptsicldmaskC2.a1, twptsimovieC2.a1, twptsiskycoverC2.b1, twptsiskyimageC2.a1
D070406.8TWP/TSI/C1 - hazy imagetwptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1


DQRID : D060915.2
Start DateStart TimeEnd DateEnd Time
08/29/2006190001/30/20070010
Subject:
TWP/TSI/C1 - solar shadowband inoperative
DataStreams:twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
Description:
The mirror/shadowband was not turning and there was no communication with the control 
board. The shadowband was stuck in the position of 0 degrees from 8/29 to 9/20/2006.

On 10/12/2006, the mirror was replaced, the real-time clock chip was removed and heat 
sinks were added to the control board, and the Ethernet hub and serial adaptor were replaced. 
On 1/8/2007, the slip clutch assembly, timing pulley, and timing belt were replaced 
(which were damaged when the mirror was replaced). These actions did not correct the problem. 
The instrument was swapped with the unit from Darwin so that the control board could be 
repaired and tested in Darwin.

Several images were collected in the iterim that should be ignored. These images include 
periods when the sun was not masked by the shadowband or the camera lens was covered by 
tape to protect the CCD from direct
exposure to the sun. There are also extended periods of missing data when the instrument 
was shutdown, waiting for parts.
Measurements:twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)

twptsimovieC1.a1:
  • (MPEG data stream - documentation not yet available)

twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

twptsiskycoverC1.b1:
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Percentage thin cloud(percent.thin)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Relative \'strength\' of direct sun(sun.strength)
  • lon(lon)
  • Solar azimuth angle(solar.azimuth)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number total thin(count.thin)
  • time(time)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Sun altitude above horizon(solar.altitude)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total indeterminant(count.unknown)
  • base time(base_time)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number below horizon in image(count.sub.horz)
  • lat(lat)
  • Sunshine meter(sunny)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total in sun circle(region.sun.count)


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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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DQRID : D070406.8
Start DateStart TimeEnd DateEnd Time
01/30/2007001102/01/20070035
Subject:
TWP/TSI/C1 - hazy image
DataStreams:twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
Description:
When the TSI from Darwin was installed (so the instrument from Manus could be returned to 
Darwin for repair) moisture in the camera lens and filter caused the sky image to be very 
"hazy". The U10 chip was removed from the control board, desiccant was installed inside 
the enclosure, additional small desiccant bags were installed inside the camera housing, 
the camera housing was sealed with silicon to prevent moisture ingress, and the camera 
lens filter was cleaned and the focus adjusted.
Measurements:twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)

twptsimovieC1.a1:
  • (MPEG data stream - documentation not yet available)

twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

twptsiskycoverC1.b1:
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total indeterminant(count.unknown)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total in sun circle(region.sun.count)


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