code: def find_point_bin(self, chi_coords):
          
          # Identify bin
          chi1_bin = int((chi_coords[0] - self.chi1_min) // self.bin_spacing)
          chi2_bin = int((chi_coords[1] - self.chi2_min) // self.bin_spacing)
          self.check_bin_existence(chi1_bin, chi2_bin)
          return chi1_bin, chi2_bin
docs: Given a set of coordinates in the chi parameter space, identify the
          indices of the chi1 and chi2 bins that the point occurs in. Returns
          these indices.
  
          Parameters
          -----------
          chi_coords : numpy.array
              The position of the point in the chi coordinates.
  
          Returns
          --------
          chi1_bin : int
              Index of the chi_1 bin.
          chi2_bin : int
              Index of the chi_2 bin.