code: def configure_arrays(self):
          
          self.science = self.hdulist['sci', 1].data
          self.err = self.hdulist['err', 1].data
          self.dq = self.hdulist['dq', 1].data
          if (self.ampstring == 'ABCD'):
              self.science = np.concatenate(
                  (self.science, self.hdulist['sci', 2].data[::-1, :]), axis=1)
              self.err = np.concatenate(
                  (self.err, self.hdulist['err', 2].data[::-1, :]), axis=1)
              self.dq = np.concatenate(
                  (self.dq, self.hdulist['dq', 2].data[::-1, :]), axis=1)
          self.ingest_dark()
          self.ingest_flash()
          self.ingest_flatfield()
docs: Get the SCI and ERR data.