CHESS: GE Detector
The pyFAI package has a
pyFAI-average -h
'''usage: pyFAI-average [options] [options] -o output.edf file1.edf file2.edf ...
This tool can be used to average out a set of dark current images using mean or median filter (along the image stack). One can also reject outliers be specifying a cutoff (remove cosmic rays / zingers from dark)
positional arguments: FILE Files to be processed
optional arguments: -h, --help show this help message and exit -V, --version show program's version number and exit -o OUTPUT, --output OUTPUT Output/ destination of average image -m METHOD, --method METHOD Method used for averaging, can be 'mean' (default) or 'min', 'max', 'median', 'sum', 'quantiles' , 'cutoff', 'std'. Multiple filters can be defined with ',' separator. -c CUTOFF, --cutoff CUTOFF Take the mean of the average +/- cutoff * std_dev. -F FORMAT, --format FORMAT Output file/image format (by default EDF) -d DARK, --dark DARK Dark noise to be subtracted -f FLAT, --flat FLAT Flat field correction -v, --verbose switch to verbose/debug mode -q QUANTILES, --quantiles QUANTILES average out between two quantiles -q 0.20-0.90 --monitor-name MONITOR_KEY Name of the monitor in the header of each input files. If defined the contribution of each input file is divided by the monitor. If the header does not contain or contains a wrong value, the contribution of the input file is ignored. On EDF files, values from 'counter_pos' can accessed by using the expected mnemonic. For example 'counter/bmon'. --quiet Only error messages are printed out
It can also be used to merge many images from the same sample when using a small beam and reduce the spotty-ness
of Debye-Sherrer rings. In this case the "max-filter" is usually recommended.'''
pyFAI-average CeO2.ge2 -d dark.ge2 -F tif
Wavelength: 0.1839
After you have completed the setup of the rietveld environment, setup the files used for this example using:
milk-examples.py -e 4
This will copy the files for the detector calibration and integration example into the current working directory.
