Welcome to DPDAK

DPDAK is an open source (GPL) tool developed for (online) analysis of large sequences of small angle scattering data - but can be used for other data as well. It is written in Python and runs on Windows and Linux. The development is a cooperation between DESY and MPIKG.


The plugins ImageIntegration1d, ImageIntegrationSubBG and SAXS/WAXS calibration use algorithms from the pyFAI package by Jerome Kieffer (ESRF). The plugin ImageIntegrationSubBG (Fit2D) uses Fit2D software developed by Dr. Andy Hammersley (ESRF).


The latest release is 1.4.2:

  • Because of memory error in python pyFAI module (since version 0.11.0) for 32-bit machine, we release only 64-bit version.

  • Windows version:

                 Download Windows version as zip-file: dpdak_win64bit_v1_4_2.zip

                 Download Windows version as zip-file: dpdak_win64bit_v1_4_2.7z


For changes with respect to the previous version v1.4.1, please read the Release Notes v1.4.2.

For release information please read the "Version v1.4.2" page.

You can find older releases at the Download page or in the Git repository.


  • 02.07.2021: Version 1.4.2 of DPDAK is released
  • 24.06.2021: DPDAK meeting online, preparation of new release
  • 14.09.2020: DPDAK meeting online, Discussion about preparation of new version
  • 05.07.2019: Version 1.4.1 of DPDAK is released
  • 03.07.2019: Fix bugs in nexus_reader and in saxswaxs_integration_p03
  • 1.4.2019: Version 1.4.0 of DPDAK is released
  • 14.12.2018: DPDAK meeting Golm Potsdam, Preparation of new release is ongoing
  • 06.04.2018: DPDAK telephone conference   Hamburg, Preparation of new release is ongoing
  • 20.07.2017: DPDAK meeting Hamburg, Preparation of new release is ongoing
  • 13.09.2016: DPDAK meeting in Golm
  • 04.05.2015: Version 1.2.0 of DPDAK is released.

Citation and Publication

If you use DPDAK in your publication, please cite it. The reference is:

A customizable software for fast reduction and analysis of large X-ray scattering data sets: applications of the new DPDAK package to small angle X-ray scattering and grazing-incidence small angle X-ray scattering, Benecke, G. et al., J. Appl. Cryst. 47, 1797-1803, (2014), doi:10.1107/S1600576714019773.


  • Contact: There is a mailing list for DPDAK: dpdak@desy.de. You are invited to subscribe to be informed about new versions, to ask questions and to provide feedback.
  • Code development for DPDAK is done using Git. You are welcome to browse the repository.

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