| 6 | 6 | The results are quite encouraging. Below, I show a series of plots for each of the cells xy70 - xy77 for chip 12 in a specific image (this was a region which was clearly affected by the strong 'streakies'). The two line plots show the before (black) and after (blue) data value histograms for the cells (one plot is linear, the other is log(Npixels)). The red lines show Gaussian fits to the histograms. The basic sigmas improve significantly (from 8.4 - 10.0 to 6.5 - 7.6). More striking, however, is the improvement of the wings of the distributions. This is most obvious in the log plots, where the corrected histograms much more closely follow the Gaussian model than the uncorrected histograms. The images show the before and after greyscale jpegs (dynamic range of -100 to +100 DN). |
