detector sim is producing float64

Bug report - Summary

Currently, the detector sim produces images with 64 bit float.

Expected Behavior vs Actual Behavior

Detectors typically produce either uint16/uint32 or int16/int32, reducing the overall data size significantly. As of now, a simulated 16M image is currently generated using float64 and thus rejected due to our 100 MB limit per monitor data frame.

Steps to Reproduce

print(dev.eiger.image.get().dtype)