Digitization and Resolution in 1DH

The plot below shows the x-position (upper pannel) and y-position (lower panel) of hits found by 1DH. There is clear digitization in both coordinates, but it is much better in y than is the (unfixed) 2DH. The x digitization looks worse, however. For reference, the red lines indicate the size of one pad (for x plot) or one bucket (for y plot).

The next plot shows the distribution of residuals for x and y.
(The number of entries in the x-plot is lower because I had to make a cut such that |x|<1 cm. The reason is that BTF sometimes makes xdev_fit on the order of meters!!!)