Task epreject
(1) corrects shifts in the energy scale of specific
pixels which are due to high-energy particles hitting the EPIC PN
detector during the calculation of the offset map and
(2) suppresses the detector noise at low energies by statistically
flagging events according to the known noise properties of the
lowest energy channels. In the case of timing mode data, epreject
also permits the flagging of soft flare events.