DQRID : D100209.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/12/2010114202/02/20101125Suspect
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Subject:
GRW/TSI/M1 - Shadowband Misalignment
DataStreams:grwtsiskyimageM1.a1, grwtsiskycoverM1.b1, grwtsicldmaskM1.a1
Description:
The shadowband was intermittently misaligned and not completely masking the sun because 
the mirror became loose from the shaft while being polished. The shadowband was realigned 
on 1/14 but by 1/27 was again slightly misaligned. The instrument was reoriented with true 
north on 1/27 and the shadowband adjusted again on 1/31. The problem was corrected on 
2/2 when the mirror mounting was tightened and the shadowband realigned.
Suggestions: 
Measurements:grwtsiskyimageM1.a1:
  • JPEG data stream - documentation not yet available
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grwtsiskycoverM1.b1:
  • region_horizon_count
  • percent_thin
  • region_sun_count_opaque
  • region_zenith_count_opaque
  • region_zenith_count
  • count_box
  • region_horizon_count_thin
  • region_zenith_count_thin
  • count_thin
  • count_sub_proczen
  • count_mask
  • count_sky
  • region_sun_count_thin
  • count_opaque
  • region_sun_count
  • region_horizon_count_opaque
  • count_sub_horz
  • percent_opaque
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grwtsicldmaskM1.a1:
  • png
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