Histogram offset (base 1 vs base 0)
Now we're getting closer to comparing strip histograms I realised I should raise the issue of how to count channels again.
In strips, we count from 0 (which matches the ASICs), but the current analyses build histograms with base 1.
Is this something that is likely to be changed for Pixels, or do we need to add a flag to the FrontEndGeometry class?