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Changes between Version 44 and Version 45 of Sa10Problems


Ignore:
Timestamp:
Dec 12, 2012, 4:35:46 PM (14 years ago)
Author:
eugene
Comment:

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  • Sa10Problems

    v44 v45  
    5959       * a.
    6060     * 2. ?MeanKronMag & ?MeanKronMagerr: they span a ridiculous range (which  is not the case for ?MeanPSFMag and ?MeanPSFMagerr, hence the reason to flag it)
    61        * a.
     61       * a. '''EAM : in DVO, the mean kron mag range is not strange'''
     62       * b.
    6263     * 3. ?StackPSFmagerr: covers an even more ridiculous range (- 1E59 to +1E59)
    63        * a.
     64       * a. '''EAM : in the DVO, I find a small fraction of objects with (eg) gStackPSFfluxerr / gStackPSFflux > 0.5 (48 / 200k in my test).  of these, a handful have values > 5.0.  looking in detail, I've found 2 cases (so far):
     65         * i. forced photometry on the stack, and the error / flux is reasonable, like 0.6 (not a problem)
     66         * ii. an object with a bright g-band stack measurement and a second coincident, much fainter measurement.  this is a measurement of the wing of the star after it was subtracted.  The problem is that the object stack photometry uses the faint, garbage value and not the bright value.'''
    6467 * B. Test on SAS10 stackdetection table with 1% of the data
    6568  * B1. entries set to weird values