Bad pixels treatment Previous and existing tools Examples and problems

SWM UD, April 2004Nadia Tonello, MPI 2 Classes: MBlindPixelCalc MBlindPixelsCalc2 MBadPixels* Recognize noisy-problematic pixels Broken (no content – gain fluctuations) HARDWARE solution Bright stars How? Check pedestal rms independent from Msigmabar! What to do with them? Use them as if they were OK Exclude from the image Interpolate *Calc * Treat

SWM UD, April 2004Nadia Tonello, MPI 3 Calibrated EventMBadPixelsCam Event after interpolation Event after cleaningCleaning levels MPehPhotCam Pixels not calibrated Pixels set as blind from check of pedestal rms Too few neighbor good pixels Example 1

SWM UD, April 2004Nadia Tonello, MPI 4 Calibrated EventMBadPixelsCam Event after interpolation Event after cleaningCleaning levels MPehPhotCam Pixels not calibrated Pixels set as blind from check of pedestal rms Too few neighbor good pixels Example 1

SWM UD, April 2004Nadia Tonello, MPI 5 Calibrated EventMBadPixelsCam Event after interpolation Event after cleaningCleaning levels MPedPhotCam Pixels not calibrated Pixels set as blind from check of pedestal rms Too few neighbor good pixels Example 1

SWM UD, April 2004Nadia Tonello, MPI 6 Calibrated EventMBadPixelsCam Event after interpolation Event after cleaningCleaning levels MPehPhotCam Pixels not calibrated Pixels set as blind from check of pedestal rms Too few neighbor good pixels Example 1

SWM UD, April 2004Nadia Tonello, MPI 7 Example 2 Calibrated EventMBadPixelsCam Event after interpolation Event after cleaningCleaning levels MPehPhotCam Pixels not calibrated Pixels set as blind from check of pedestal rms

SWM UD, April 2004Nadia Tonello, MPI 8 Example 2 Calibrated EventMBadPixelsCam Event after interpolation Event after cleaningCleaning levels MPehPhotCam Pixels not calibrated Pixels set as blind from check of pedestal rms

SWM UD, April 2004Nadia Tonello, MPI 9 Example 2 Calibrated EventMBadPixelsCam Event after interpolation Event after cleaningCleaning levels MPehPhotCam Pixels not calibrated Pixels set as blind from check of pedestal rms

SWM UD, April 2004Nadia Tonello, MPI 10 Example 2 Calibrated EventMBadPixelsCam Event after interpolation Event after cleaningCleaning levels MPehPhotCam Pixels not calibrated Pixels set as blind from check of pedestal rms

SWM UD, April 2004Nadia Tonello, MPI 11 Anomalies

SWM UD, April 2004Nadia Tonello, MPI 12 Anomalies

SWM UD, April 2004Nadia Tonello, MPI 13 Summary Tools are available, tested but not optimized Some problems cannot be solved simply with the check of the pedestal rms In Munich we Interpolate …for the old classes MBlindPixelsCalc2 blind; blind.SetCheckPedestalRms(); blind.SetUseInterpolation(); …with the new classes MBadPixelsCalc badpxcalc; MBadPixelsTreat badpxtreat; MBadPixelsMerge badpxmerge;