Chirok is a program for statistical analysis of the ratio of calculated and measured Parsons quotients.

Chirok is open source software covered by the GPLv3 license.

If you use this program, please cite the following paper: Chirok: a post-refinement tool to analyse absolute structure.


To run Chirok in Windows you may need to install the MS Visual C++ Redistributable for Visual Studio 2015-2019.

The Linux version of Chirok is compiled in Ubuntu 16.04, thus it should work in any rather new distributions.

Source code

Source code is freely available at the git repository:


  • 2020.7.28 - v1.1.2:

    • Add paper into the about windows.
  • 2020.5.20 - v1.1.1:

    • Minor fixes.
  • 2020.2.28 - v1.1.0:

    • Chirok predicts the Gamma threshold and the number of bins using the Random Forest algorithm.
    • Remove funny characters from the log output on Windows.
    • Fix minor issues with zooming and autoscaling.
  • 2019.7.24 - v1.0.0:

    • First release.
  • 2018.12.13 - v0.1.0:

    • Initial alpha release.