qspace_1.h5 : no binning, no median filter
qspace_2.h5 : binning 4x4, no median filter
qspace_3.h5 : no binning, median filter 3x3
qspace_4.h5 : binning 4x4, median filter 3x3
qspace_5.h5 : mask: mask.npy
mask.npy : Mask file