Investigate if PV cleanup step is deterministic
It was pointed out in #117 (closed) that the cleanup step for the PV finding might not be deterministic. While no non-deterministic behavior was observed in the overall number of reconstructed PVs, it might be possible that the individual PVs selected by this step are different between different executions. This should be investigated in more detail.
It should also be checked if the cleanup step is still necessary at all.