barycen - Apply barycenter corrections to X-ray timing data
barycorr - Generalized multi-mission barycenter correction tool
burstfinder - Find time intervals in an input FITS binned lightcurve that characterize start and stop of a burst
ftadjustgti - Perform filtering and normalization of good time interval (GTI)
mkintensfilt - Calculate GTIs based on a light curve and an intensity selection
rebingausslc - Rebin an irregularly sampled light curve (such as BAT or ASM).
xrtraytrace - Calculates the passage of X-ray photons through a thin-foil type X-ray telescope, treating reflection, transmission, scattering, and absorption.
xrtreftable - Calculate the probabilities of reflection and transmission of an X-ray incident upon a mirror surface.