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wiki:Sa9Problems

Version 39 (modified by heather, 14 years ago) ( diff )

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Here is the list of problems in SAS9 (unresolved SA8 problems appended to the end)

To be fixed for SA10

priority problem location fixer fixed?
nigel found magnitude variation problems due to zeropoint offset ipp Bill yes
minor zeropoint issue ipp / ubercal Bill yes
stackdetections some have kronflux = 0 and some have kronflux = -999 why? all things with forced photometry have kronflux = 0 (other columns are set to 0 as well - basically kron* and moments* = 0) recommend they are set to null cmf file gene/bill
ndetections != ng + nr + ni + nz + ny in many cases see SA9ndetections = we set ndetections = sum(nfilters) dvo heather/gene yes
stsci has object count integrity problems - investigate and compare to conrad s - factor 2 in det in obj_table see SAS9DataIntegrity - we think it is related to ipptopsps having filters that drop detections based on certain criteria ipptopsps? heather yes
xmeanpsfmag == xstackpsfmag discussions:right now, xmean is set to xstack when only stack detection. should be flag - see thread on this, we think it is ok dvo gene yes
apMag in StackDetectionFull needs exp time correction ipptopsps heather
flxRn values in stackApFlux needs exp time correction ipptopsps heather
check aperture values as per Roberto -we think this has been resolved bill/gene yes
sdss - ps1 radial aperture magnitudes have offsets which change systematically with larger radius (via Roberto) psphot bill/gene will not fix for this release
position angle distribution for PSFs seems odd (via Nigel) --also present in LAP smf/cmf (needs to be fixed) bill/gene yes - in gene's branch needs to go in trunk
conrad data integrity issues (the overlap object/stack/detections - see SAS9DataIntegrity -we understand them now heather yes
3 edge problem part 1: psps needs bigger ranges for SAS psps thomas
3 edge problem part 1: ipptopsps needs bigger ranges for SAS: recommend ra:[327:341] dec:[-7:7] to give a buffer ipptopsps heather yes
3 edge problem part 2: integrity will always fail near edges heather thinks ken we decided we will accept that (3pi)
-999s in ndetections : see SA9ndetections 12k from failed batch, 60k from ipptopsps not having enough ra/dec range, 2k need investigation,suspect from ipptopsps filters. heather yes
ken's funny meanpsf vs kronpsf mag problem - flag issue, gene responded ipptopsps heather yes
remap of stack and p2 flags to infoFlags = (dbflags << 46 | flags2 << 32 | flags) ipptopsps and wiki heather yes
remove ipptopsps filters on detections etc and see if it improves integrity stuff- some important ones were kept (ie, delete null/zero objid and force un-queness on that) ipptopsps heather yes

to be fixed

priority problem location fixer fixed?
1 need flag mask for stack only detections and forced photometry in stacks that are included by default bill
need flag masks for 'good' detections bill?
3 need psvo-type flag mask generator for psps bill/psps/roy?
need descriptions of all flags wiki heather yes PSPSFlags
go over HeathersPSPSVerificationPage and determine the columns that need to be dropped or filled heather/gene/ken
stsci likely has other issues that need to be added to this wiki heather
need description of xflags (object table) wiki heather yes PSPSFlags
Object has unfilled columns: projectionCellId, stackVer, consistency, updated, varFlag ken/gene
DetectionFull has unused columns: activeFlag, historymodnum ken/gene
StackDetectionFull has unused columns: primaryF, apmagerr, kronraderr, activeflag, historymodnum ken/gene
stackDetectionFull = skycell column not set properly heather/conrad
Object has unused w band nw, wMean,wMeanPSFMag, etc gene/heather
3 John Lacy extended model radii problem - see DRAVG pages ipp gene
psi flags are they accurate psps heather
we need a proposal for skycell/projection cell psps bill
we need flag wiki for sa10 wiki heather
3 John Lacy extended model radii problem - see DRAVG pages ipp gene
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