fixed an error in noise pixel calculation
took box_centroider function out of get_centroiders, and updated to newest version from Jim and Sean which includes the noisepix error correction
code to test the effects of changing aperture size on noise pixel measurement, and find other dependencies
messing around with using [15.0,15.0] for the initial peak pixel, instead of an ra and dec
median in addition to mean
now plots binned mean levels as a function of time for one amplifier as a function of frame delay
fixed a rounding error which caused an unexplained spread in centroids
no major changes, just saving