FXT DAS
Latest Version
Historical Version
FXT CALDB
Latest Version
Historical Version
USER GUIDE
FXT DAS
The Follow-up X-ray Telescope Data Analysis Software (FXTDAS) is to achieve the EP-FXT data analysis processing and extract scientific products, e.g. energy spectra, images, light curves, ancillary response files (ARF), redistribution matrix files (RMF) and background files.
FXT has three scientific observation modes: the full frame mode (FF), the partial window mode (PW) and the timing mode (TM), and FXTDAS is designed to allow the general users to analyse FXT data observed in these modes.
The software is written in ftools style and are fully compatible with the HEASoft software.
FXT DAS - Latest Version
Version 1.10 Updates:
Software Workflow:
1. Added a coordinate correction module (fxtcoord).
2. Adjusted the particle background identification module (fxtparticleidentify) to follow the gain correction (fxtpical) .
3. Improved the noise reduction method for Timing Mode data.
4. Added an event grade statistics module (fxtplotgrade) to assist in estimating pileup.
Calibration Database and Methods:
1. Updated the E-C relationship and the energy resolution.
2. Updated the coordinate transformation matrix, with a position uncertainty of about 10 arcsec.
3. Updated the Ancillary Response File (ARF), suitable for the energy band of 0.5-10 keV in this version.
Bug Fixes:
1. Fixed the issues for some keywords recognition.
2. Corrected the spelling errors in the logs.
New Feature:
1. Added a software version for macOS .
2. To facilitate FXT data analysis, the pipeline tool fxtchain is provided. All updates in this version have been integrated into this tool. We recommend that users utilize fxtchain (refer to Chapter 6 of the USER GUIDE 1.10) to complete FXT data analysis.
You can download the source code of FXTDAS for linux or macOS. In addition, the docker image is also provided. If you encounter any installation problem, it is recommended to use the docker version, or please report them on the helpdesk.
*Source code for linux:
EP-FXT software v1.10 source code for linux or IHEPDocs: EP-FXT software v1.10 source code for linux
*Source code for macOS (M series chips):
EP-FXT software v1.10 source code for mac or IHEPDocs: EP-FXT software v1.10 source code for mac
FXT DAS - Historical Version
EP-FXT software v1.05
FXT CALDB
The Einstein Probe Follow-up X-ray Telescope (EP-FXT) Calibration Database (CALDB) is an essential resource for researchers working with EP-FXT data. The CALDB contains a comprehensive collection of calibration files necessary for accurate data reduction and analysis. These files provide detailed information about the properties and performance of the EP-FXT detectors, mirrors, and other instrument components. The CALDB is organized into a well-defined directory structure, making it easy for users to locate and access the calibration files required for their specific analysis tasks.
Some of the key calibration files included in the EP-FXT CALDB are:
1）Ancillary Response Files (ARF): These files contain information about the effective area of the detectors and mirrors as a function of energy.
2）Response Matrix Files (RMF): These files characterize the energy response of the EP-FXT detectors, accounting for energy dispersion and detector resolution.
3）Point Spread Function (PSF) files: These files describe the spatial distribution of X-ray photons as they are focused by the EP-FXT mirrors.
4）Energy Encircled Fraction (EEF) files: These files provide information on the fraction of energy contained within a given radius for a point source.
5）Telescope Definition (TELDEF) files: These files describe the geometry and alignment of the EP-FXT detectors and mirrors.
6）Vignetting files: These files contain information on the reduction of the telescope's effective area due to off-axis angles.
7）Filter Transmission (FTRANS) files: These files describe the transmission properties of the filters used in EP-FXT.
8）Quantum Efficiency (QE) files: These files provide information on the detectors' sensitivity to incoming photons as a function of energy.
9）Gain and Charge Transfer Inefficiency (GAIN) files: These files contain information about the gain calibration and charge transfer inefficiency of the EP-FXT detectors.
10）Mirror effective area (EFF) files: These files provide data on the reflectivity and efficiency of the EP-FXT mirrors as a function of energy.
11）Background files: These files contain information on the instrumental and astrophysical background components relevant to the EP-FXT observations.
The EP-FXT CALDB plays a crucial role in ensuring that researchers can obtain the most accurate and reliable results from their analysis of EP-FXT data. By providing up-to-date calibration information, the CALDB enables scientists to fully exploit the exceptional capabilities of the Einstein Probe Follow-up X-ray Telescope and contribute to the advancement of our knowledge of the high-energy universe.
FXT CALDB - Latest Version
Select one of these two download options by clicking on the links:
FXT CALDB - Historical Version
CALDB V1.05
USER GUIDE
Latest version:
fxt_user_guide_v1.10(lite version)
fxt_user_guide_v1.10(full version)
historycal version:
