binary comparison for MASA metadata

                if not ref_exist:

                    continue

                _, ref_suffix = os.path.splitext(refMDfile)

                _, dut_suffix = os.path.splitext(dutMDfile)

                assert ref_suffix == dut_suffix

                BE_flag = 0

                if ref_suffix == ".csv":

                    with open(refMDfile, "r") as f_ref:

                        with open(dutMDfile, "r") as f_dut:

                            ref_content = f_ref.read()

                            dut_content = f_dut.read()

                            BE_flag = int(not (ref_content == dut_content))

                elif ref_suffix == ".met":

                    BE_flag = int(not filecmp.cmp(refMDfile, dutMDfile))

                else:

                    assert False, f"MD file has unknown suffix {ref_suffix}"

                with open(self.BEcsv[tag], "a") as f:

                    f.write(