XPCS Analysis 8-ID
This Wiki page is dedicated towards providing documentation on 8-ID XPCS Data Analysis and Visualization
Overview
The sections below provide description of Visualization of XPCS results followed by the Data Reduction/Analysis of Raw Data to yield Correlation functions.
XPCS metadata and results are primarily saved into a HDF5 file format based on a Data Exchange format defined at the APS.
MetaData File
The concept is as follows: There are groups in the HDF5 file that are part of the Data Acquisition and these are categorized into the following: /measurement
/measurement/instrument /measurement/instrument/acquisition/
/measurement/instrument/detector/ /measurement/instrument/detector/roi/ /measurement/instrument/detector/kinetics/
/measurement/instrument/source_begin/
/measurement/sample/
The above groups each contain several HDF5 datasets or parameters which have a scalar, vector, ND arrays or string attributes. The above are present in every metadata HDF5 file associated with each data acquisition. This file is saved in the same directory/folder as the raw detector images file itself.
Analysis Parameters
When a data set is processed which primarily means some sort of a correlation analysis, then the parameters that are needed to analyze the data such as:
- user defined mask
- wave vector maps (called as qmaps) where each wave vector or an azimuthal angle is characterized by a unique integer in what is called as a digitized map
- look up table that links the integers in the qmaps to the q/phi values
- Start and end frame numbers to be processed which could be a subset of the frames collected
- More intricate analysis parameters such as the multitau delay level, striding and averaging frames prior to correlation
Section 2
Section 3
Section 4
- dadga
- agdga
- test
- help
| Date | Start Time | Duration | Task | Status |
|---|---|---|---|---|
| 12/7 | 1:00 PM | 1 Day | cadmus | DONE |
| 12/14 | 1:00 PM | 1 Day | echo | DONE |
| 12/21 | 1:00 PM | 1 Day | overhead comfort displays | DONE |
| 12/22 | 1:00 PM | 1 Day | demeter | DONE |
| 1/3 | 1:00 PM | 1 Day | phoenix | DONE |
| Run 2017-1 (or April/May shutdown) | TBD | TBD | other MCR systems as approved by AOP | DONE |
