update calibration in Chip.py

                ###     seed=SeedBiasNonuni+self.chipID,

                ###     logger=self.logger)

                BiasCombImg = galsim.Image(self.npix_x, self.npix_y, init_value=0) ###

                if config["ins_effects"]["add_bias"] == True:

                    biaslevel = self.bias_level

                    overscan = biaslevel-2

                elif config["ins_effects"]["add_bias"] == False:

                    biaslevel = 0

                    overscan = 0

                # Readout noise for Biases is not generated with random seeds. So readout noise for bias images can't be reproduced.

                if config["ins_effects"]["cosmic_ray"] == True: