#3: 2011-08-24

Attendees: Heather, Roy, Serge, (Bill invited himself because we were noisy and gave info about processing)

• Serge created the database (see action A-002)
• Heather showed that using appropriate flags to cut the "detection candidates" reduced the size of the set by 8 (56000 out of 400000). See action A-003. She reported her discoveries in ​http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/ZoologyInvestigations
• In the 56000 that remain, a lot have a large flux_sig/flux ratio

Pending Actions

• A-002 (Serge): Done Create a database with: all values taken from the footprint-<filter>-not-matched-psphot.fits files. Add columns filter, stack_id, skycell_id. See /data/ipp009.0/heather/heather.blog.txt .
• A-003 (All): Done Identify false positives which have been correctly set as "having a problem" (see flags meaning at ​http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/cmf_columns )

Actions

• A-004 (Serge): Create the database again on ipp001 (neverland is almost full)
• A-005 (Serge): Ingest the full detections on ipp001 (in an another table)
• A-006 (Roy): Update ​http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/ZoologyInvestigations with the flux_sig/flux ratio explanation
• A-007 (Heather): Make histograms of flux_sig/flux ratio.
• A-008 (Who?): Once A-005 is done, check flux_sig/flux ratio for true positive
• A-009 (Who?): Answer Gene's questions: 1) What fraction of the detections have flux / flux_sig < 5 (the nominal cutoff) or < 3 (a possible agressive cutoff)?; 2) What is the spatial distribution of these detections? 3) What does the histogram of pixel value / sqrt(pixel variance) look like in areas / cells with large numbers of these detections? Should be a Gaussian with a width of 1, but if there is excess noise from the camera in some areas, the width will be > 1 (we underestimate the variance).
• A-010 (Who?): Is it filter dependent?

#2: 2011-08-23

Attendees: Heather, Roy, Serge

Heather wrote some doc here: ​http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/ZoologyHints

Pending Actions

• A-001 (Heather): Done Provide FITS files where false positives can be displayed and underlined using ds9.

Actions

• A-002 (Serge): Create a database with: all values taken from the footprint-<filter>-not-matched-psphot.fits files. Add columns filter, stack_id, skycell_id. See /data/ipp009.0/heather/heather.blog.txt .
• A-003 (All): Identify false positives which have been correctly set as "having a problem" (see flags meaning at ​http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/cmf_columns )

#1: 2011-08-22

Attendees: Heather, Roy, Serge

Heather talked about the problem. She already has wikipages showing some of them:

• ​http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/MaskFeatures.pattern.20090722
• ​http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/MaskFeatures090712

Actions

• A-001 (Heather): Provide FITS files where false positives can be displayed and underlined using ds9.

Previous Actions

• None

Next meeting: as soon as A-001 has been completed.