When you observed zero counts, you didn’t not observe any counts
Dong-Woo, who has been playing with BEHR, noticed that the confidence bounds quoted on the source intensities seem to be unchanged when the source counts are zero, regardless of what the background counts are set to. That is, p(s|NS,NB) is invariant when NS=0, for any value of NB. This seems a bit odd, because [naively] one expects that as NB increases, it should/ought to get more and more likely that s gets closer to 0. Continue reading ‘When you observed zero counts, you didn’t not observe any counts’ »