Data Quality Reports for Session: 127354 User: kajsa1pard Completed: 04/22/2010

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040119.1TWP/TSI/C1 - mirror continuously spinningtwptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D040119.2TWP/TSI/C1 - shadowband not movingtwptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D050602.1TWP/TSI/C1 - hazy imagetwptsiC1.00, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D050621.2TWP/TSI/C1 - moisture in camera housingtwptsiC1.00, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D050826.1TWP/TSI/C1 - obstruction in lenstwptsiC1.00, twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1,
twptsiskyimageC1.a1
D060718.4TWP/TSI/C1 - Shadowband continuosly rotatingtwptsiC1.00, twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1,
twptsiskyimageC1.a1
D060822.1TWP/TSI/C1 - rust spots on mirrortwptsicldmaskC1.a1, twptsiskycoverC1.b1
D060825.2TWP/TSI/C1 - high control board temperaturetwptsiskycoverC1.b1
D060915.2TWP/TSI/C1 - solar shadowband inoperativetwptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D070406.8TWP/TSI/C1 - hazy imagetwptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D080506.1TWP/TSI/C1 - shadowband misalignmenttwptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D080912.1TWP/TSI/C1 - Missing datatwptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
D090506.1TWP/TSI/C1 - Shadowband MisalignmenttwptsiskycoverC1.b1


DQRID : D040119.1
Start DateStart TimeEnd DateEnd Time
12/23/2003214912/24/20030412
12/27/2003065512/27/20030804
12/29/2003064512/29/20030714
12/31/2003023312/31/20030817
01/11/2004201501/12/20040419
01/13/2004034401/13/20042240
Subject:
TWP/TSI/C1 - mirror continuously spinning
DataStreams:twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
Description:
The mirror and associated shadowband went into a mode of continuously spinning, sometimes 
clockwise and sometimes counterclockwise, so the sun was not blocked.
Measurements:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: camera and sun strip mask(count.mask)

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DQRID : D040119.2
Start DateStart TimeEnd DateEnd Time
01/13/2004224001/17/20040143
Subject:
TWP/TSI/C1 - shadowband not moving
DataStreams:twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
Description:
The shadowband was stuck in a position at about 215 degrees.
Measurements:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: camera and sun strip mask(count.mask)

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DQRID : D050602.1
Start DateStart TimeEnd DateEnd Time
05/27/2005020006/08/20050030
Subject:
TWP/TSI/C1 - hazy image
DataStreams:twptsiC1.00, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
Description:
Moisture in the camera lens and filter caused the sky image to be very "hazy". The lens 
and filter were cleaned, the moisure seals were checked, and desiccant was added to both 
the camera housing and main electonics enclosure.
Measurements:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsiC1.00:
  • Raw data stream - documentation not supported(raw)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percentage thin cloud(percent.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number total indeterminant(count.unknown)

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DQRID : D050621.2
Start DateStart TimeEnd DateEnd Time
06/20/2005201206/22/20050245
06/28/2005030206/30/20052204
Subject:
TWP/TSI/C1 - moisture in camera housing
DataStreams:twptsiC1.00, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
Description:
Water infiltrated the camera housing after periods of heavy rain causing moisture to 
collect inside the neutral density filter, corrupting the images. The filter was cleaned, 
o-ring seal checked, and camera housing sealed where it joins the arm.
Measurements:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsiC1.00:
  • Raw data stream - documentation not supported(raw)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percentage thin cloud(percent.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number total indeterminant(count.unknown)

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DQRID : D050826.1
Start DateStart TimeEnd DateEnd Time
07/20/2005000003/23/20060618
Subject:
TWP/TSI/C1 - obstruction in lens
DataStreams:twptsiC1.00, twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1,
twptsiskyimageC1.a1
Description:
The TSI at Manus has been able to remain dry and produces an image but the percentage of 
cloud cover is determined to be 100% even on cloud free days. Moisture in the camera lens 
and neutral density filter was corrupting the sky images. The lens and filter were 
cleaned, the moisure seals checked, the camera housing sealed, and desiccant added to both the 
camera housing and main electronics enclosure. On 3/23/2006, the lens was replaced and 
the sky images were significantly improved.
Measurements:twptsiC1.00:
  • Raw data stream - documentation not supported(raw)
twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsimovieC1.a1:
  • (MPEG data stream - documentation not yet available)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Sunshine meter(sunny)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total in sun circle(region.sun.count)
  • Relative \'strength\' of direct sun(sun.strength)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • 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 in processed circle(count.sky)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number thin in sun circle(region.sun.count.thin)

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DQRID : D060718.4
Start DateStart TimeEnd DateEnd Time
07/18/2006200007/25/20060350
Subject:
TWP/TSI/C1 - Shadowband continuosly rotating
DataStreams:twptsiC1.00, twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1,
twptsiskyimageC1.a1
Description:
The mirror was continuously spinning during different periods of the day, usually in the 
afternoon, causing the shadowband to not properly block the sun. This problem was 
corrected by removing the real-time-clock integrated circuit DSI306, or EEPROM U10, from the 
control board and reloading the position and time parameters.
Measurements:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsiC1.00:
  • Raw data stream - documentation not supported(raw)
twptsimovieC1.a1:
  • (MPEG data stream - documentation not yet available)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percentage thin cloud(percent.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number total indeterminant(count.unknown)

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DQRID : D060822.1
Start DateStart TimeEnd DateEnd Time
07/09/2006000010/12/20060600
Subject:
TWP/TSI/C1 - rust spots on mirror
DataStreams:twptsicldmaskC1.a1, twptsiskycoverC1.b1
Description:
During the evening of 7/8/2006, something caused several rust spots on one side of the 
hemispheric mirror which continued to grow in size and to be interpreted as clouds in the 
processed images. This problem was corrected during a site visit when the mirror was 
replaced.
Measurements:twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Pixel count: number total thin(count.thin)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total opaque(count.opaque)
  • Percent opaque cloud(percent.opaque)

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DQRID : D060825.2
Start DateStart TimeEnd DateEnd Time
11/13/2005000010/12/20062300
Subject:
TWP/TSI/C1 - high control board temperature
DataStreams:twptsiskycoverC1.b1
Description:
The TT8 control board temperature was high, ~50C, so that the cooling fan was constantly 
on. It appears that the heat sinks were not transferred from the original board to the new 
one when it was replaced. The problem was corrected when heat sinks were installed.
Measurements:twptsiskycoverC1.b1:
  • Sunshine meter(sunny)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Solar azimuth angle(solar.azimuth)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percentage thin cloud(percent.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Sun altitude above horizon(solar.altitude)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number total indeterminant(count.unknown)

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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:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsimovieC1.a1:
  • (MPEG data stream - documentation not yet available)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Sunshine meter(sunny)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total in sun circle(region.sun.count)
  • Solar azimuth angle(solar.azimuth)
  • lon(lon)
  • Relative \'strength\' of direct sun(sun.strength)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: camera and sun strip mask(count.mask)
  • time(time)
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total thin(count.thin)
  • Dummy altitude for Zeb(alt)
  • lat(lat)
  • base time(base_time)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Time offset of tweaks from base_time(time_offset)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Percentage thin cloud(percent.thin)
  • Sun altitude above horizon(solar.altitude)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number thin in sun circle(region.sun.count.thin)

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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:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsimovieC1.a1:
  • (MPEG data stream - documentation not yet available)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Percentage thin cloud(percent.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number total indeterminant(count.unknown)

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DQRID : D080506.1
Start DateStart TimeEnd DateEnd Time
03/20/2006182003/23/20060425
Subject:
TWP/TSI/C1 - shadowband misalignment
DataStreams:twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
Description:
The TSI mirror controller was configured with a north latitude instead of south causing 
the shadowband to not mask the sun beginning at the vernal equinox. The problem was 
corrected by changing the sign of the latitude in the configuration file.
Measurements:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Pixel count: number total thin(count.thin)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total in sun circle(region.sun.count)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)

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DQRID : D080912.1
Start DateStart TimeEnd DateEnd Time
11/12/2005000011/16/20052359
01/22/2006000002/23/20062359
07/18/2006000007/19/20062359
07/23/2006000007/24/20062359
08/29/2006000001/29/20072359
08/22/2007000008/23/20072359
08/21/2008000004/22/20090133
Subject:
TWP/TSI/C1 - Missing data
DataStreams:twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1
Description:
Data are missing and unrecoverable.
Measurements:twptsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
twptsimovieC1.a1:
  • (MPEG data stream - documentation not yet available)
twptsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
twptsiskycoverC1.b1:
  • Sunshine meter(sunny)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total in sun circle(region.sun.count)
  • Solar azimuth angle(solar.azimuth)
  • lon(lon)
  • Relative \'strength\' of direct sun(sun.strength)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: camera and sun strip mask(count.mask)
  • time(time)
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: number total thin(count.thin)
  • Dummy altitude for Zeb(alt)
  • lat(lat)
  • base time(base_time)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Time offset of tweaks from base_time(time_offset)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Percentage thin cloud(percent.thin)
  • Sun altitude above horizon(solar.altitude)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number thin in sun circle(region.sun.count.thin)

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DQRID : D090506.1
Start DateStart TimeEnd DateEnd Time
04/22/2009013306/30/20090214
Subject:
TWP/TSI/C1 - Shadowband Misalignment
DataStreams:twptsiskycoverC1.b1
Description:
When the TSI was reinstalled on 4/22/2009, the shadowband was aligned relative to the 
enclosure but either the camera arm & housing was not plumb or the enclosure was not properly 
aligned with true north. This was corrected on 6/30 at solar noon.
Measurements:twptsiskycoverC1.b1:
  • Pixel count: number total thin(count.thin)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number total opaque(count.opaque)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)

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