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Data
exp=cxif5315:run=147, 198 - dark
exp=cxif5315:run=162 - water sample
exp=cxif5315:run=169 - data sample
Detector: CxiDs2.0:Cspad.0
Calibration files
Use my local calibration store
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[psana]
calib-dir = /reg/neh/home1/dubrovin/LCLS/rel-mengning/calib |
Dark files were obtained and deployed using Calibration Management Tool
exp=cxif5315:run=147 dark average, rms, and average difference between runs 147-198:
Difference of average dark images between runs 147-198 is small, 0.3 ADU, difference rms=0.6 ADU, this proves that CxiDs2.0:Cspad.0 is stable during 50 runs.
Image array averaging
1) Download configuration file psana-cxif5315-cspad-ds2-NDArrAverage.cfg
2) To get average/rms/max over 10000 events data of run 169 use command:
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psana -c psana-cxif5315-cspad-ds2-NDArrAverage.cfg -n 1000 exp=cxif5315:run=169 |
This command produces files with arrays of size (32x185x388)
- cspad-ndarr-ave-cxif5315-r0169.dat
- cspad-ndarr-rms-cxif5315-r0169.dat
- cspad-ndarr-max-cxif5315-r0169.dat
2) To get average/rms/max over 1000 events (skipping 5000) data for water sample of run 162 use command:
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psana -c psana-cxif5315-cspad-ds2-NDArrAverage.cfg -s 5000 -n 1000 exp=cxif5315:run=162 |
This command produces files with arrays of size (32x185x388)
- cspad-ndarr-ave-cxif5315-r0162.dat
- cspad-ndarr-rms-cxif5315-r0162.dat
- cspad-ndarr-max-cxif5315-r0162.dat
Geometry alignment
In accordance with CSPAD Alignment, use geometry file:
/reg/g/psdm/detector/alignment/cspad/calib-cxi-ds2-2015-01-20/calib/CsPad::CalibV1/CxiDs2.0:Cspad.0/geometry/1-end.data
and array with image from file: cspad-ndarr-ave-cxif5315-r0169.dat
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Apparently, this geometry file had wrong indexes associated with quads (cable swap) that gives misaligned 2x1s in quads. This problem should be fixed in the file
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Tuning of geometry can be done with Detector alignment tool running command:
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geo -i cspad-ndarr-ave-cxif5315-r0169.dat -g geo-cxif5315-r0169-swap-tuned.data |
Thus obtained geo-cxif5315-r0169-swap-tuned.data gives image, radial, and spectral histograms for averaged array:
or see image array with maximal intensities by the command
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geo -i cspad-ndarr-max-cxif5315-r0169.dat -g geo-cxif5315-r0169-swap-tuned.data |
looks like: ,
and similar for water background from run 162:
ROI Masks
Using image array in cspad-ndarr-max-cxif5315-r0169.dat and geometry file geo-cxif5315-r0169-swap-tuned.data, one can generate masks using the Mask Editor embedded in Calibration Manager.
Run command calibman
, select tab ROI
and performing all steps of the mask creation procedure, one can draw ROI on image, create the mask for this image, convert this mask to ndarray, and use this ndarray for data processing. This ndarray can be used later for image reconstruction with the same geometry file.
For data processing of exp=cxif5315:run=169 two masks were produced for arc and equatorial regions:
References
2015-04-08 Quick start, calibration, detector alignment, peak finder, scripts
2015-05-04 Angles phi and beta, fraser transformation
2015-08-19 Analysis with new peakfinder
2015-10-20 Indexing
2015-11-06 Geometry re-alignment
2015-12-01 Indexing after fraser transformation with β=0
2016-02-02 Cross-checks: Lattice and look up table
2016-03-25 Masks, Background subtraction
2016-04-05 Test of Peak Finders
2016-04-25 Test of Peak Finders - V2
2016-05-03 Test of Peak Finders - V3
2016-04-29 Fit functions and quality
2016-04-29 Phi-beta fit results in ARC and EQU
2016-05-13 Indexing results
2017-02-28 Revision of Analysis
References
- Calibration Management Tool
- Detector alignment tool
- CSPAD Alignment
- Meng's spreadsheet to the runs taken
- Meng's link for the CFEL confluence that has the data analysis summary
- Meng's amyloid_math1.pdf
- Direct mapping of fiber diffraction patterns into reciprocal space, Norbert Stribeck* and Ulrich Nochel (download)
- Preprocessing averaged XFEL data from adenovirus peptide amyloid and derivation of specimen characteristics, David Wojtas and Rick Millane
- Polanyi(1921).Z.Phys.7.pdf
- fiber-diffraction-formalism.pdf - my note
- J.Biol.Chem-2005-v280-N4-2481-Papanikolopoulou.pdf
- Nature-1999-v401-935-Raaij.pdf
- class ImgAlgos.PyAlgos - collection of n-d array processing algorithms
- class Detector.PyDetector - direct access to detector data and calibration n-d arrays
- 2015-10-13-meng-indexing1.pdf , 2015-10-13-meng-lineout_from_169_a.txt- Meng's calculations for indexing
- pyimgalgos (source)
- FiberIndexing.py (source)
- FiberAngles.py (source)
- TDFileContainer.py (source), TDFileContainer (auto-doc)
- Scattering and diffraction
...