After removal of 158 heat-pipe noise pixels, panels a and b show the histograms of the max(S/N)/σ_S/N for different timescales in the 4–8 keV band. Panel a is used for the CRT and panel b shows the IMT. In each deconvolved S/N sky map, we selected the pixel with the maximum S/N value and computed the σ_S/N of the sky map. For a given timescale, the histogram shows the distribution of the ratio max(S /N)/σ_S/N for all-sky maps of this timescale. If max(S /N)/σ_S/N > 6.5, it means that there is a false trigger. Finally, no false trigger appears on any timescale after our heat-pipe noise removal procedure.