  Excess energy method is used in searches of gravitational waves (GWs)
produced from sources with poorly modeled characteristics. It identifies GW
events by searching for a coincidence appearance of excess energy in a GW
detector network. While it is sensitive to a wide range of signal morphologies,
the energy outliers can be populated by background noise events (background),
thereby reducing the statistical confidence of a true signal. However, if the
physics of the source is partially understood, weak model dependent constraints
can be imposed to suppress the background. This letter presents a novel idea of
using the reconstructed chirp mass along with two goodness of fit parameters
for suppressing background when search is focused on GW produced from the
compact binary coalescence.
