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

priority	problem	location	fixer	fixed?
	nigel found magnitude variation problems due to zeropoint offset	ipp	Bill	yes
	minor zeropoint issue	ipp / ubercal	Gene/Eddie
	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
	ndetections != ng + nr + ni + nz + ny in many cases see SA9ndetections	dvo	heather/gene

	stsci has object count integrity problems - investigate and compare to conrad s - factor 2 in det in obj_table see SAS9DataIntegrity	dvo?	heather
	stsci likely has other issues that need to be added to this wiki		heather
	need description of xflags (object table)	wiki	heather	yes PSPSFlags
	xmeanpsfmag == xstackpsfmag discussions:right now, xmean is set to xstack when only stack detection. should be flag - see thread on this
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
3	need psvo-type flag mask generator for psps
	apMag in StackDetectionFull needs exp time correction	ipptopsps	heather
	flxRn values in stackApFlux needs exp time correction	ipptopsps	heather
	check aperature values as per Roberto		heather
	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
	conrad data integrity issues (the overlap object/stack/detections - see SAS9DataIntegrity		heather
3	edge problem part 1: psps and ipptopsps both need bigger ranges for SAS	ipptopsps/psps	heather/thomas
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		heather
	ken's funny meanpsf vs kronpsf mag problem (sounds similar to previous problem - exposure time again ?	ipptopsps	heather
3	John Lacy extended model radii problem - see DRAVG pages	ipp	gene
	Object has unfilled columns: projectionCellId, stackVer, consistency, updated, varFlag
	DetectionFull has unused columns: activeFlag, historymodnum
	StackDetectionFull has unused columns: primaryF, apmagerr, kronraderr, activeflag, historymodnum
	stackDetectionFull = skycell column not set properly
	Object has unused w band nw, wMean,wMeanPSFMag, etc
	remap of stack and p2 flags to infoFlags = (dbflags << 46 | flags2 << 32 | flags)	ipptopsps and wiki	heather