  Spikes are some obvious sharp increases that appear on the raw light curves
of High Energy X-ray telescope(HE) onboard Insight-HXMT, which could have
influences on the data products like energy and power spectra. They are
considered to be fake triggers generated by large signals. In this paper, we
study the characteristic of the spikes and propose two methods to remove spikes
from the raw data. According to the different influences on energy and power
spectra, the best parameters for removing the spikes is selected and used in
the Insight-HXMT data analysis software. The generation mechanism of spikes is
also studied using the backup HE detectors on ground and the spikes can be
reduced by the electronic design.
