For GBM we used the 8 - channel ctime data to carry out this test on GRB 210812A. We considered all the detectors where the second pulse was visible in any channel ( n1 , n6 through nb , energy channels 1 through 6 , and b0 and b1 , energy channels 0 and 1 ) , and data from ACS and BAT ( 25 - 350 keV ) . We find that the ratio of the pulses in all the channels and all three instruments is consistent with the mean value within 1.6 standard deviations ( see Figure 5 ) . We thus conclude that GRB 210812A passes the count ratio test for lensing .