Changes between Initial Version and Version 1 of PublicPages/MayallZbandLegacy/NotesforObservers/Copilot

Timestamp:

Feb 8, 2016 12:13:17 PM (9 years ago)

Author:

Dustin Lang

Comment:

--

PublicPages/MayallZbandLegacy/NotesforObservers/Copilot

@@ +1 @@
+= Copilot =
+
+*copilot.py* is a script that watches for new images, measures them,
+ and produces a plot, *recent.png* to help observers understand what
+ the conditions are doing.
+
+Start it from the `mzls@mayall-idl.kpno.noao.edu` account,
+{{{
+python copilot.py &
+}}}
+
+It will monitor the $MOS3_DATA directory, and whenever a new image
+comes it, it will measure it, update a little database, and create a
+"strip plot" showing the conditions.
+
+The database is in *~/obsbot/obsdb/obsdb.sqlite3*.
+
+An example plot is shown here:
+
+[[Image(copilot-example.png)]]
+
+The top panel shows the seeing.  Any problems with the data we know
+how to detect are marked with red vertical bands.  These include:
+* readtime -- MAY indicate a duplicated image ("md5sum" is a better
+  indicator).
+* md5sum -- this image contains identical pixels as a previous image.
+  This requires action!  Please see the problem description [[https://desi.lbl.gov/trac/wiki/PublicPages/MayallZbandLegacy/NotesforObservers/Problems#a5.Repeatimages HERE]].
+* pixcnt -- the image readout is shifted.  Please have a look at this
+  exposure and note in the logs which CCD has the shift.  The shifts
+  are pretty easily recognized in the *mscexam* IRAF window -- blocks
+  of one of the images will be shifted to the left or right.  Do not
+  stop observing.
+  This problem is described [[https://desi.lbl.gov/trac/wiki/PublicPages/MayallZbandLegacy/NotesforObservers/Problems#a4.Shiftedimages here]]
+* (unlabelled bar) -- it has been a while since the last image has been seen.  Have images stopped being written?  See problem description [[https://desi.lbl.gov/trac/wiki/PublicPages/MayallZbandLegacy/NotesforObservers/Problems#a0.Noimagesbeingwritten here]]  
+
+
+