I have a concern regarding readjusting the intensities value of xrd data. In one the discussion in this platform, (the link is here- https://www.researchgate.net/post/What_could_be_the_reason_for_not_having_further_low_chi_square_value_better_agreement_in_my_refinement_result) it is said that the intensities value height can be readjusted to get good chi square value even though all the peaks are very well matched but the Chi square value is not low. Is this authentically correct or are we manipulating the data by resizing the height of the xrd peaks which we get. If it is correct, then who decides up to what resizing amount should the intensities be done/changed so to get good Chi square value?