The influence of the Insight-HXMT/LE time response on timing analysis

Abstract The LE is the low energy telescope that carried on Insight -HXMT. It uses swept charge devices (SCDs) to detect soft X-ray photons. LE’s time response caused by structure of SCDs. With theoretical analysis and Monte Carlo simulations we discuss influence (LTR) timing from three aspects: power spectral density, pulse profile lag. After LTR, value density monotonously decreases with increasing frequency. a sinusoidal signal reduces half at frequency 536 Hz. corresponding for quasi-periodic oscillation (QPO) signals 458 root mean square (RMS) QPOs holds similar behaviour. centroid full width maxima (FWHM) do not change. LTR RMS profiles shifts phase. In domain, only peak cross-correlation function while it does change position; thus will affect result When considering lag obtained two instruments one among them LE, 1.18 ms expected LTR. calculated in domain same as domain.