| DQR ID | Subject | Data Streams Affected |
|---|
| D050826.1 | TWP/TSI/C1 - obstruction in lens | twptsiC1.00, twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1,
twptsiskyimageC1.a1 |
| D060718.4 | TWP/TSI/C1 - Shadowband continuosly rotating | twptsiC1.00, twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1,
twptsiskyimageC1.a1 |
| D060915.2 | TWP/TSI/C1 - solar shadowband inoperative | twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
| D070406.8 | TWP/TSI/C1 - hazy image | twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
| D080912.1 | TWP/TSI/C1 - Missing data | twptsicldmaskC1.a1, twptsimovieC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
| 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)
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: - Percentage thin cloud(percent.thin)
- Pixel count: number thin in horizon area(region.horizon.count.thin)
- Relative \'strength\' of direct sun(sun.strength)
- Pixel count: number total opaque(count.opaque)
- Pixel count: camera and sun strip mask(count.mask)
- Pixel count: number total thin(count.thin)
- Pixel count: number thin in sun circle(region.sun.count.thin)
- 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)
- 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)
- Sunshine meter(sunny)
- Pixel count: number total in processed circle(count.sky)
- Pixel count: number total in zenith circle(region.zenith.count)
- Pixel count: number opaque in zenith circle(region.zenith.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)
|
| 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: | twptsiC1.00: - Raw data stream - documentation not supported(raw)
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)
|
| 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)
|
| 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)
|