I noticed a something that initially confused me a little, so I thought I should mention it.
https://github.com/scopetools/cudasirecon/blob/97af94df03911735cc3ace81caf29ca36e153de0/src/cudaSirecon/cudaSirecon.cpp#L903C1-L903C2
zoomz sounds like the zzoom parameter but zoomfact is printed, which is the parameter for XY zoom. Perhaps it's worth printing out both here?