OnDA: online data analysis and feedback for serial X-ray imaging.
This article describes a free and open-source data analysis utility designed for fast online feedback during serial X-ray diffraction and scattering experiments:OnDA(online data analysis). Three complete real-time monitors for common types of serial X-ray imaging experiments are presented. These monitors are capable of providing the essential information required for quick decision making in the face of extreme rates of data collection. In addition, a set of modules, functions and algorithms that allow developers to modify the provided monitors or develop new ones are provided. The emphasis here is on simple, modular and scalable code that is based on open-source libraries and protocols.OnDAmonitors have already proven to be invaluable tools in several experiments, especially for scoring and monitoring of diffraction data during serial crystallography experiments at both free-electron laser and synchrotron facilities. It is felt that in the future the kind of fast feedback thatOnDAmonitors provide will help researchers to deal with the expected very high throughput data flow at next-generation facilities such as the European X-ray free-electron laser.
Centre for Free Electron Laser Science, Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
Valerio
V
Mariani
Centre for Free Electron Laser Science, Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
Andrew
A
Morgan
Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany; European XFEL GmbH, Albert Einstein Ring 19, 22761 Hamburg, Germany.
Chun Hong
CH
Yoon
Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
Thomas J
TJ
Lane
Centre for Free Electron Laser Science, Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
Thomas A
TA
White
Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
Christopher
C
O'Grady
Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
Manuela
M
Kuhn
Centre for Free Electron Laser Science, Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
Steve
S
Aplin
Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
Jason
J
Koglin
Centre for Free Electron Laser Science, Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
Anton
A
Barty
Centre for Free Electron Laser Science, Deutsches Elektronen Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany; Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany; Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany.
Henry N
HN
Chapman
computer programs; free-electron lasers; online data analysis; serial femtosecond crystallography