EP/WXT Simulation Data

The EP team has just performed a simulation for a one-year all sky survey as conducted by the Wide-field X-ray telescope (EP/WXT) aboard the satellite. The simulation mimics the equipment's capture of high-energy transients like Tidal disruption events (TDEs), short gamma-ray bursts (SGRBs), high-luminosity long gamma-ray bursts (HL-LGRBs), low-luminosity long gamma-ray bursts (LL-LGRBs), high-redshift gamma-ray bursts (HZ-GRBs), supernova shock breakout (SBO) as well as the point sources and diffuse emissions provided by ROSAT sky survey. Also the bright sources monitored by MAXI have been taken into consideration.

The simulation data can be visualized and browsered in the website. You can also check the detailed simulation description below.

Visualization Description

Simulation Description

Last Updated at 2020-08

Observation mode: Pointing observation in WXT Sky Survay Mode, three pointings per orbit
Observation Duration: 2022.11-2023.10
Number of observations: 16329
Data Volume: 500GB
Simulation time: 2.5 days under 55(64) cores

Known source:

ROSAT Point Source:

MAXI Source:

Transient: TDE, SGRB, HL-LGRB, LL-LGRB, HZ-LGRB, SN-SBO
Diffuse Radiation: ROSAT diffuse radiation (0.09-0.2 keV)

The duration of each orbit is 97 minutes. The average observation time per orbit is 44 min and each observation lasts 877s.

All the data are saved as event files, and can be used to extract high-level science data like spectra, light curves and images. The information of the transients detected by EP/WXT, including the detectability, SNR, the distribution of the positions, redshift, luminosity, can also be obtained. The situations of onboard triggers have been tested. All the data can be viewed on this website.

Exposure Map-equatorial coordinate

Exposure Map-galactic coordinate

Exposure Map-galactic coordinate

Sky Map-equatorial coordinate

Sky Map-galactic coordinate

Sky Map-galactic coordinate

Sky Map (arms substracted)-equatorial coordinate

Sky Map (arms substracted)-galactic coordinate

Sky Map (arms substracted)-galactic coordinate

Detected Transients (5sigma).
Transient Type	Detected Number	Ever Appeared In Fov
TDE	102	330
SGRB	10	61
HL-LGRB	88	3432
LL-GRB	8	824
HZ-LGRB (z>6)	0	20
SN_SBO	293	2623
MAXI Monitored Variable source	337	/

Onboard Trigger Times
Transient Type	Detected Number	Onboard Trigger Times
TDE	102(330)	10?
SGRB	10(61)	8
HL-LGRB	83(3432)	38?
LL-GRB	8(824)	1
HZ-LGRB (z>6)	0(20)	0
SN_SBO	293(2623)	111

Point Source Detection Sensitivity

Point Source Detection Sensitivity (Different Time)

Point Source Detection Sensitivity (Different Time)

Detection Sensitivity Distribution

Detection Sensitivity Distribution

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TDE Position Distribution

TDE Position Distribution

TDE Property Distribution

TDE Property Distribution

Number of Orbits When TDE Detected

Number of Orbits When TDE Detected

Peak Luminosity of TDE

Peak Luminosity of TDE

Peak Flux of TDE

Peak Flux of TDE

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SGRB Position Distribution

SGRB Position Distribution

SGRB Property Distribution

SGRB Property Distribution

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HL-LGRB Position Distribution

HL-LGRB Position Distribution

HL-LGRB Property Distribution

HL-LGRB Property Distribution

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LL-GRB Position Distribution

LL-GRB Position Distribution

LL-GRB Property Distribution

LL-GRB Property Distribution

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SN-SBO Position Distribution

SN-SBO Position Distribution

SN-SBO Property Distribution

SN-SBO Property Distribution