Notes:

1. The simulation is to observe the input source with EP/WXT for a fixed cadence of once per 3 orbits (~97min*3=291min), with 20 min exposure per observation. This is roughly consistent with the observing strategy of EP in its all-sky survey mode. Considering the large FoV of EP/WXT, almost all the sources in the night sky can be monitored regularly with this strategy.
2. For the first observation, the simulated source is detected in the center of FoV. While for the rest observations, the source positions are random, which can be found in the header of the event file, with the keywords “XSOURCE” and “YSOURCE”.
3. The output spectra, as well as the arf file, are in the Type II format.
4. The output light curve is a FITS file with multiple extensions. Each extension contains the light curve of each single observation in the default 0.5-4 keV band. The final extension contains the long-term light curve, in which the fluxes (converted from the WXT count rates) are in the energy band defined in the user-input interface.
5. The output image file is also a FITS file with multiple extensions, with each extension containing the image for each single observation. The last extension contains a stacked image for all the observations.
6. The template of the TDE light curve is generated based on a rising period of 10 days and a plateau of 15 days, followed by the power law evolution model with an index of -5/3. The other light curves are taken from real observations by Swift (SGRB181123B, LGRB200303A, LGRB210822A), RXTE (3C273, NGC4051), and MAXI (Algol, GX339-4, Herx-1).