Normalization factors for current and flux in criticality calculations

Hello,everone. I have a qustion about tally normalization. Currently,I am calculating k-eigenvalue problem for a square assembly. In post-processing, I divided a 20✖️20 grid to extract the mesh flux and mesh-suface current. When I divide the grid into 60✖️60,I find that the ratio between current and flux changes dramatically at the same location, but the flux ratios on the same energy group remain essentially unchanged.I would like to ask if the normalization factors for current and flux are the same?If not, I would like to know how to use the same normalization factor? Or how to calculate the normalization factors used for each of the current and flux in post-processing?