Monitor the distomat dropouts by month

oct 2002

Notes/modification logs:
2007 2006 2005

The laser ranging distomats measure the position of the platform every two minutes. There are 6 distomats used to measure the position and orientation. The distomats are numbered 1 through 6 moving clockwise looking down from above the dish. They are space +/- 35 degrees from the towers. Distomat 1 is at the east side of T12 . They continue clockwise with the last (distomat 6) which is on the west side of T12. For a complete measurement, all 6 distomats must be functioning. Rain, fog , pointing error, etc... can cause one or more distomats to not complete the measurement.

The plots on this page show when the various distomats have failed to complete a measurement. These plots should be monitored to make sure that a distomat is not failing. This could occur because the distomat itself has trouble, the window for the distomat is becoming opaque, the heater in the distomat is failing (causing humidity inside the cover to accumulate on the window), the alignment of the distomat is not optimal, or there are problems with communications.

Each table contains three columns. Each column has a different set of plots. The format of the plots is described below:

Col 1: distomat failure by hour and day.

    For these plots the horizontal axis is the hour of day while the vertical axis is the day of month. The different distomats are coded by color. If a measurement does not complete then a * will be placed at that time and day for the distomat that failed. The *'s for each distomat are offset by .15 from the adjacent ones so the * do not hide one another. A dashed line is drawn on the last day processed (from midnight up to the time the plot was made).
     If no data is recorded during a two minute interval, a light blue cross is written on the plot. This can occur if the pc is turned off for maintenance, or the file transfer between the pc and the sun server hangs up. At the beginning of each month, you may see a few "noreading" *. These should probably be ignored. The algorithm looks for all filenames with that requested month. The first few minutes of the first day of the month may be in the file of the last day of the previous month.
     Each plot covers an entire month except the current month (which is updated at 4am each morning).

Col 2,Col3: failures by az,za and az,hour of day.

These plots have selected all of the measurements when the carriage house was at stow position. They also require at least 1 bad distomat reading during a measurement. col2 selects 1 to 6 bad distomats bad while col3 selects 1 to 3 bad distomats. Col2 will include heavy rain where all distomats have failed. Col3 requires at least 3 distomats functioning so it will exclude measurement of heavy rain. This lets you see which distomats function better overall, and which distomats may be affected by poor alignment and tilting of the platform.
There 3 plots on a page. For each plot 2 distomats (that point at a common corner of the platform) are grouped together in each plot (color is used to distinguish the two):

Top plot: distomats 1 and 6 pointing at T12
Middle plot: distomats 2 and 3 pointing at T4
Bottom plot: distomats 4 and 5 pointing at T8

There are two pages for each month. The first page plots failures versus az,za so you can see if there is any weight imbalances. The 2nd page plots failures versus hour of day and azimuth. This will show if there is any day/night tendencies.
At the end of each year is a summary plot showing the number of total failures by month (by distomat) and the fractional number of failures by month (by distomat).

Some things to keep in mind:

During the day the telescope is often left at az=270, za=10 for maintenance. It does not go to high za very often and the platform is not normally tilted.
During noon the sun can pass close to a distomat (depending on the time of day). looking at the failures by hour of day this does not seem to happen very often.
Some months are rainier than others. This causes distomat failures. You would expect all of the distomats to fail together, but that does not seem to happen all of the time.

processing:x101/lr/distfail/disterrdaily.sc, x101/lr/distalign/plotdistfail.pro

**distomat failures 2014**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan14(.ps) (.pdf)	jan14 (.ps) (.pdf)	jan14 (.ps) (.pdf)
feb14(.ps) (.pdf)	feb14 (.ps) (.pdf)	feb14 (.ps) (.pdf)
feb14(.ps) (.pdf)
	summary 2014 (.ps) (.pdf)	summary 2014 (.ps) (.pdf)

**distomat failures 2013**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan13(.ps) (.pdf)	jan13 (.ps) (.pdf)	jan13 (.ps) (.pdf)
feb13(.ps) (.pdf)	feb13 (.ps) (.pdf)	feb13 (.ps) (.pdf)
mar13(.ps) (.pdf)	mar13 (.ps) (.pdf)	mar13 (.ps) (.pdf)
apr13(.ps) (.pdf)	apr13 (.ps) (.pdf)	apr13 (.ps) (.pdf)
may13(.ps) (.pdf)	may13 (.ps) (.pdf)	may13 (.ps) (.pdf)
jun13(.ps) (.pdf)	jun13 (.ps) (.pdf)	jun13 (.ps) (.pdf)
jul13(.ps) (.pdf)	jul13 (.ps) (.pdf)	jul13 (.ps) (.pdf)
aug13(.ps) (.pdf)	aug13 (.ps) (.pdf)	aug13 (.ps) (.pdf)
sep13(.ps) (.pdf)	sep13 (.ps) (.pdf)	sep13 (.ps) (.pdf)
oct13(.ps) (.pdf)	oct13 (.ps) (.pdf)	oct13 (.ps) (.pdf)
nov13(.ps) (.pdf)	nov13 (.ps) (.pdf)	nov13 (.ps) (.pdf)
dec13(.ps) (.pdf)	dec13 (.ps) (.pdf)	dec13 (.ps) (.pdf)
	summary 2013 (.ps) (.pdf)	summary 2013 (.ps) (.pdf)

Notes 2013:

04feb13: windows for distomats 2,3 replaced

**distomat failures 2012**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan12(.ps) (.pdf)	jan12 (.ps) (.pdf)	jan12 (.ps) (.pdf)
feb12(.ps) (.pdf)	feb12 (.ps) (.pdf)	feb12 (.ps) (.pdf)
mar12(.ps) (.pdf)	mar12 (.ps) (.pdf)	mar12 (.ps) (.pdf)
apr12(.ps) (.pdf)	apr12 (.ps) (.pdf)	apr12 (.ps) (.pdf)
may12(.ps) (.pdf)	may12 (.ps) (.pdf)	may12 (.ps) (.pdf)
jun12(.ps) (.pdf)	jun12 (.ps) (.pdf)	jun12 (.ps) (.pdf)
jul12(.ps) (.pdf)	jul12 (.ps) (.pdf)	jul12 (.ps) (.pdf)
aug12(.ps) (.pdf)	aug12 (.ps) (.pdf)	augg2 (.ps) (.pdf)
sep12(.ps) (.pdf)	sep12 (.ps) (.pdf)	sep12 (.ps) (.pdf)
oct12(.ps) (.pdf)	oct12 (.ps) (.pdf)	oct12 (.ps) (.pdf)
nov12(.ps) (.pdf)	nov12 (.ps) (.pdf)	nov12 (.ps) (.pdf)
dec12(.ps) (.pdf)	dec12 (.ps) (.pdf)	dec12 (.ps) (.pdf)
	summary 2012 (.ps) (.pdf)	summary 2012 (.ps) (.pdf)

**distomat failures 2011**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan11(.ps) (.pdf)	jan11 (.ps) (.pdf)	jan11 (.ps) (.pdf)
feb11(.ps) (.pdf)	feb11 (.ps) (.pdf)	feb11 (.ps) (.pdf)
mar11(.ps) (.pdf)	mar11 (.ps) (.pdf)	mar11 (.ps) (.pdf)
apr11(.ps) (.pdf)	apr11 (.ps) (.pdf)	apr11 (.ps) (.pdf)
may11(.ps) (.pdf)	may11 (.ps) (.pdf)	may11 (.ps) (.pdf)
jun11(.ps) (.pdf)	jun11 (.ps) (.pdf)	jun11 (.ps) (.pdf)
jul11(.ps) (.pdf)	jul11 (.ps) (.pdf)	jul11 (.ps) (.pdf)
aug11(.ps) (.pdf)	aug11 (.ps) (.pdf)	aug11 (.ps) (.pdf)
sep11(.ps) (.pdf)	sep11 (.ps) (.pdf)	sep11 (.ps) (.pdf)
oct11(.ps) (.pdf)	oct11 (.ps) (.pdf)	oct11 (.ps) (.pdf)
nov11(.ps) (.pdf)	nov11 (.ps) (.pdf)	nov11 (.ps) (.pdf)
dec11(.ps) (.pdf)	dec11 (.ps) (.pdf)	dec11 (.ps) (.pdf)
	summary 2011 (.ps) (.pdf)	summary 2011 (.ps) (.pdf)

**distomat failures 2010**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan10(.ps) (.pdf)	jan10 (.ps) (.pdf)	jan10 (.ps) (.pdf)
feb10(.ps) (.pdf)	feb10 (.ps) (.pdf)	feb10 (.ps) (.pdf)
mar10(.ps) (.pdf)	mar10 (.ps) (.pdf)	mar10 (.ps) (.pdf)
apr10(.ps) (.pdf)	apr10 (.ps) (.pdf)	apr10 (.ps) (.pdf)
may10(.ps) (.pdf)	may10 (.ps) (.pdf)	may10 (.ps) (.pdf)
jun10(.ps) (.pdf)	jun10 (.ps) (.pdf)	jun10 (.ps) (.pdf)
jul10(.ps) (.pdf)	jul10 (.ps) (.pdf)	jul10 (.ps) (.pdf)
aug10(.ps) (.pdf)	aug10 (.ps) (.pdf)	aug10 (.ps) (.pdf)
sep10(.ps) (.pdf)	sep10 (.ps) (.pdf)	sep10 (.ps) (.pdf)
oct10(.ps) (.pdf)	oct10 (.ps) (.pdf)	oct10 (.ps) (.pdf)
nov10(.ps) (.pdf)	nov10 (.ps) (.pdf)	nov10 (.ps) (.pdf)
dec10(.ps) (.pdf)	dec10 (.ps) (.pdf)	dec10 (.ps) (.pdf)
	summary 2010 (.ps) (.pdf)	summary 2010 (.ps) (.pdf)

**distomat failures 2009**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan09(.ps) (.pdf)	jan09 (.ps) (.pdf)	jan09 (.ps) (.pdf)
feb09(.ps) (.pdf)	feb09 (.ps) (.pdf)	feb09 (.ps) (.pdf)
mar09(.ps) (.pdf)	mar09 (.ps) (.pdf)	mar09 (.ps) (.pdf)
apr09(.ps) (.pdf)	apr09 (.ps) (.pdf)	apr09 (.ps) (.pdf)
may09(.ps) (.pdf)	may09 (.ps) (.pdf)	may09 (.ps) (.pdf)
jun09(.ps) (.pdf)	jun09 (.ps) (.pdf)	jun09 (.ps) (.pdf)
jul09(.ps) (.pdf)	jul09 (.ps) (.pdf)	jul09 (.ps) (.pdf)
aug09(.ps) (.pdf)	aug09 (.ps) (.pdf)	aug09 (.ps) (.pdf)
sep09(.ps) (.pdf)	sep09 (.ps) (.pdf)	sep09 (.ps) (.pdf)
oct09(.ps) (.pdf)	oct09 (.ps) (.pdf)	oct09 (.ps) (.pdf)
nov09(.ps) (.pdf)	nov09 (.ps) (.pdf)	nov09 (.ps) (.pdf)
dec09(.ps) (.pdf)	dec09 (.ps) (.pdf)	dec09 (.ps) (.pdf)
	summary 2009 (.ps) (.pdf)	summary 2009 (.ps) (.pdf)

**distomat failures 2008**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan08(.ps) (.pdf)	jan08 (.ps) (.pdf)	jan08 (.ps) (.pdf)
feb08(.ps) (.pdf)	feb08 (.ps) (.pdf)	feb08 (.ps) (.pdf)
mar08(.ps) (.pdf)	mar08 (.ps) (.pdf)	mar08 (.ps) (.pdf)
apr08(.ps) (.pdf)	apr08 (.ps) (.pdf)	apr08 (.ps) (.pdf)
may08(.ps) (.pdf)	may08 (.ps) (.pdf)	may08 (.ps) (.pdf)
jun08(.ps) (.pdf)	jun08 (.ps) (.pdf)	jun08 (.ps) (.pdf)
jul08(.ps) (.pdf)	jul08 (.ps) (.pdf)	jul08 (.ps) (.pdf)
aug08(.ps) (.pdf)	aug08 (.ps) (.pdf)	aug08 (.ps) (.pdf)
sep08(.ps) (.pdf)	sep08 (.ps) (.pdf)	sep08 (.ps) (.pdf)
oct08(.ps) (.pdf)	oct08 (.ps) (.pdf)	oct08 (.ps) (.pdf)
nov08(.ps) (.pdf)	nov08 (.ps) (.pdf)	nov08 (.ps) (.pdf)
dec08(.ps) (.pdf)	dec08 (.ps) (.pdf)	dec08 (.ps) (.pdf)
	summary 2008 (.ps) (.pdf)	summary 2008 (.ps) (.pdf)

Notes 2008: (top)

Sep08 .. large % failure because distomats off 01sep,02sep for about 24 hours

**distomat failures 2007**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan07(.ps) (.pdf)	jan07 (.ps) (.pdf)	jan07 (.ps) (.pdf)
feb07(.ps) (.pdf)	feb07 (.ps) (.pdf)	feb07 (.ps) (.pdf)
mar07(.ps) (.pdf)	mar07 (.ps) (.pdf)	mar07 (.ps) (.pdf)
apr07(.ps) (.pdf)	apr07 (.ps) (.pdf)	apr07 (.ps) (.pdf)
may07(.ps) (.pdf)	may07 (.ps) (.pdf)	may07 (.ps) (.pdf)
jun07(.ps) (.pdf)	jun07 (.ps) (.pdf)	jun07 (.ps) (.pdf)
jul07(.ps) (.pdf)	jul07 (.ps) (.pdf)	jul07 (.ps) (.pdf)
aug07(.ps) (.pdf)	aug07 (.ps) (.pdf)	aug07 (.ps) (.pdf)
sep07(.ps) (.pdf)	sep07 (.ps) (.pdf)	sep07 (.ps) (.pdf)
oct07(.ps) (.pdf)	oct07 (.ps) (.pdf)	oct07 (.ps) (.pdf)
nov07(.ps) (.pdf)	nov07 (.ps) (.pdf)	nov07 (.ps) (.pdf)
dec07(.ps) (.pdf)	dec07 (.ps) (.pdf)	dec07 (.ps) (.pdf)
	summary 2007 (.ps) (.pdf)	summary 2007 (.ps) (.pdf)

Notes 2007: (top)

10jan07: all dists window cleaned. dist2,3 were realigned
24jan07: distomat 5 failed (sn 101115) with error 72. Replaced with spare (sn 101036?).
apr07: some distomats were covered by the containment for a few days. Probably need to realign the distomats when painting done. For apr07->jul07 data was used even when ch not in stow position. This was needed since the painting did not leave the ch at stow.
jul07: distomat 4 and 5 were off for a long time because of the painting containment.
aug,sept.. some distomats covered by painting containment.

**distomat failures 2006**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan06(.ps) (.pdf)	jan06 (.ps) (.pdf)	jan06 (.ps) (.pdf)
feb06(.ps) (.pdf)	feb06 (.ps) (.pdf)	feb06 (.ps) (.pdf)
mar06(.ps) (.pdf)	mar06 (.ps) (.pdf)	mar06 (.ps) (.pdf)
apr06(.ps) (.pdf)	apr06 (.ps) (.pdf)	apr06 (.ps) (.pdf)
may06(.ps) (.pdf)	may06 (.ps) (.pdf)	may06 (.ps) (.pdf)
jun06(.ps) (.pdf)	jun06 (.ps) (.pdf)	jun06 (.ps) (.pdf)	;
jul06(.ps) (.pdf)	jul06 (.ps) (.pdf)	jul06 (.ps) (.pdf)
aug06(.ps) (.pdf)	aug06 (.ps) (.pdf)	aug06 (.ps) (.pdf)
sep06(.ps) (.pdf)	sep06 (.ps) (.pdf)	sep06 (.ps) (.pdf)
oct06(.ps) (.pdf)	oct06 (.ps) (.pdf)	oct06 (.ps) (.pdf)
nov06(.ps) (.pdf)	nov06 (.ps) (.pdf)	nov06 (.ps) (.pdf)
dec06(.ps) (.pdf)	dec06 (.ps) (.pdf)	dec06 (.ps) (.pdf)
	summary 2006 (.ps) (.pdf)	summary 2006 (.ps) (.pdf)

Notes 2006: (top)

13nov06: dist 3( sn xxx) was replaced with s/n 10115) from leica. The external window was replaced with a new one.
02oct06: dist5 window cleaned and realigned around 13:45
02oct06: dist6 (sn: 101115) was replaced by sn:10037. Cleaned and then realigned.
11sep06: all distomat windows cleaned with fuller anti-fog.
07sep06: morning. replaced distomat 5 (sn 100337) with distomat back from maintenance (sn 101036).
06jul06: dist 4 (sn 101036) replaced by dist (sn 101075) and then realigned. sn 101036 will be sent back to fab for maintenance.
05jul06: all distomat windows cleaned.
21apr06: realigned D4. Looks like it got knocked out of alignment by the previous days work. D5 was also realigned.
20apr06: d1 switched out for maintenance. It was replaced with the spare that just came back from leica. windows cleaned and fans turned on for distomats: 1,2,3,4 (5,6 will be done tomorrow).
17mar06:d1 window cleaned inside,out with anti fog spray 14:00.
16mar06:d2 window changed 11:25.
14mar06: d1 window changed, realigned. Used a different glue with this window :flexible silicone adhesive silver plate aluminum from chomerics.
06mar06: d1,d2,d3 exterior window cleaned with anti fog.
23feb06: distomat 2,3 outside window cleaned with EXXENE antifog.
07feb06: new windows distomats: 3,4,5.
06feb06: new window distomat 6.
27jan06: afternoon all fans turned off. lenses cleaned.
19jan06: fan installed dist5
18jan06: fan installed dist 4
17jan06: fan installed dist 3
13jan06: fans installed dist 1 and 2.
11jan06: put fan in distomat 6 to try and improve temperature circulation inside canister.

**distomat failures 2005**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan05	jan05 (.ps) (.pdf)	jan05 (.ps) (.pdf)
feb05	feb05 (.ps) (.pdf)	feb05 (.ps) (.pdf)
mar05	mar05 (.ps) (.pdf)	mar05 (.ps) (.pdf)
apr05	apr05 (.ps) (.pdf)	apr05 (.ps) (.pdf)
may05 (.ps) (.pdf)	may05 (.ps) (.pdf)	may05 (.ps) (.pdf)
jun05 (.ps) (.pdf)	jun05 (.ps) (.pdf)	jun05 (.ps) (.pdf)
jul05 (.ps) (.pdf)	jul05 (.ps) (.pdf)	jul05 (.ps) (.pdf)
aug05(.ps) (.pdf)	aug05 (.ps) (.pdf)	aug05 (.ps) (.pdf)
sep05(.ps) (.pdf)	sep05 (.ps) (.pdf)	sep05 (.ps) (.pdf)
oct05(.ps) (.pdf)	oct05 (.ps) (.pdf)	oct05 (.ps) (.pdf)
nov05(.ps) (.pdf)	nov05 (.ps) (.pdf)	nov05 (.ps) (.pdf)
dec05(.ps) (.pdf)	dec05 (.ps) (.pdf)	dec05 (.ps) (.pdf)
	summary 2005 (.ps) (.pdf)	summary 2005 (.ps) (.pdf)

Notes 2005: (top)

30may05 6pm distomat 4 stopped working. When examined, the heater was off. Probably no power getting to distomat. On next day found that the filter for the ac line that is right inside where the acpower enters the distomat canister was toast...
31jan05: all distomats realigned.

**distomat failures 2004**
hour of day vs day Updated daily col 1	za vs az, hour vs az at least 0 good readings col 2	za vs az, hour vs az at least 3 good readings col 3
jan04	jan04	jan04
feb04	feb04	feb04
mar04	mar04	mar04
apr04	apr04	apr04
may04	may04	may04
jun04	jun04	jun04
jul04	jul04	jul04
aug04	aug04	aug04
sep04	sep04	sep04
oct04	oct04	oct04
nov04	nov04	nov04
dec04	dec04	dec04
	summary 2004	summary 2004

**distomatfailures 2003**
hour of day vs day	za vs az, hour vs az at least 0 good distomats col 2	za vs az, hour vs az at least 3 good readings col 3
jan03	jan03	jan03
feb03	feb03	feb03
mar03	mar03	mar03
apr03	apr03	apr03
may03	may03	may03
jun03	jun03	jun03
jul03	jul03	jul03
aug03	aug03	aug03
sep03	sep03	sep03
oct03	oct03	oct03
nov03	nov03	nov03
dec03	dec03	dec03
	summary 2003	summary 2003

**distomat failure by month for 2002**
jan02
feb02
mar02
apr02
may02
jun02
jul02
aug02
sep02
oct02
nov02
dec02

processing: x101/lr/distfail/disterrdaily.pro

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