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v1.0.0-rc.166 (#76)
* `rugnux --mode calibration` writes `<prefix>.json` beside the `.poni`, whose `dataset_settings` member is a `jfjoch_broker` `dataset_settings` body as it stands.
* `rugnux` and `jfjoch_viewer` read PILATUS miniCBF sweeps natively, without conversion.
* Masters written by other facilities open, including Eiger 1.x and third-party NXmx variants.
* `rugnux` measures the beam centre on every run, and indexes with it when the file's value indexes nothing.
* A detector swung out on a 2theta arm is placed where the file says it stands, and the calibration can hold the tilt fixed.
* `rugnux` writes the unmerged MTZ by default, and a P1 merge beside it, so a wrong space group can be re-merged without reprocessing.
* Significant improvements to symmetry handling in `rugnux`: the lattice, the point group, the setting and the systematic absences.
* The `rugnux` report gives the resolution the CC1/2 fit reached, beside the range the reflections were written to.
* The `rugnux` report gives the twinning statistics measured before the space group was decided, beside the ones measured after.
* The `rugnux` report gives the strong-direction diffraction limit, and warns when CC1/2 is not monotone with resolution.
* `rugnux` ranks screw axes on the evidence their absences carry, rather than on how many control reflections a candidate happens to have.
* Twinning is no longer reported when the L-test contradicts it.
* The `rugnux` report gives the detector tilt, the measured tilt and the direct beam beside the beam centre, and a post-refined beam centre is judged against the run's own measurement rather than the file's.
* `--no-refine-tilt` holds the detector tilt at the value in the file, instead of zeroing it, when the calibration starts from the spots.
* The `jfjoch_viewer` grid scan view draws the cells in the proportion of the scan steps, so the map has the shape of the scanned area.

Reviewed-on: #76
Co-authored-by: Filip Leonarski <filip.leonarski@psi.ch>
2026-09-02 21:17:31 +02:00

1.9 KiB

PowderCalibrationSpotCheck

Where the circle through the found spots puts the beam, and how far that is from the geometry actually fitted. An independent cross-check: it reads nothing from the file's own geometry, so it holds where the summed azimuthal profile does not - a profile binned about a badly wrong centre shows each ring smeared across its sectors, and a fit on it converges on the wrong answer without saying so. Two methods sharing no assumption, so the disagreement is the statement. Absent when no spots were available.

Properties

Name Type Description Notes
beam_x_pxl float Beam centre x the spots vote for [pixels] [optional]
beam_y_pxl float Beam centre y the spots vote for [pixels] [optional]
detector_distance_mm float Detector distance the spots imply [mm] [optional]
disagreement_pxl float Distance between the spots' beam centre and the fitted one [pixels] [optional]

Example

from jfjoch_client.models.powder_calibration_spot_check import PowderCalibrationSpotCheck

# TODO update the JSON string below
json = "{}"
# create an instance of PowderCalibrationSpotCheck from a JSON string
powder_calibration_spot_check_instance = PowderCalibrationSpotCheck.from_json(json)
# print the JSON string representation of the object
print(PowderCalibrationSpotCheck.to_json())

# convert the object into a dict
powder_calibration_spot_check_dict = powder_calibration_spot_check_instance.to_dict()
# create an instance of PowderCalibrationSpotCheck from a dict
powder_calibration_spot_check_from_dict = PowderCalibrationSpotCheck.from_dict(powder_calibration_spot_check_dict)

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