3.3.3.37. NXazint1d

Status:

application definition (contribution), extends NXobject

Description:

This application definition describes data from two-dimensional area detectors t ...

This application definition describes data from two-dimensional area detectors that has been integrated azimuthally, with a certain radial binning in units of q or 2theta. An example application that creates these files at MAX IV is documented here: https://maxiv-science.github.io/azint_writer/

Symbols:

The symbol(s) listed here will be used below to coordinate datasets with the same shape.

nImg: Number of integrated images

nRad: Number of radial bins

nRadEdge: Number of radial bin edges (nRad+1)

Groups cited:

NXdata, NXentry, NXinstrument, NXmonitor, NXmonochromator, NXparameters, NXprocess, NXsource

Structure:

ENTRY: (required) NXentry

The ``NXsubentry`` or Multi-Method Data convention described here: ...

The NXsubentry or Multi-Method Data convention described here: https://manual.nexusformat.org/rules.html#table-nxsubentry should be used when different method (e.g. NXcanSAS or NXmonopd), NXazint2d or other NXazint1d data, integrated with different options, should be stored under the same NXentry.

In case of a single NXazint1d data processing the standard convention with the application definition directly under NXentry should be used.

@default: (optional) NX_CHAR ⤆

Declares which :ref:`NXdata` group ...

Declares which NXdata group contains the data to be shown by default. It is needed to resolve ambiguity when more than one NXdata group exists. The value is the name of the default NXdata group.

definition: (required) NX_CHAR ⤆

Official NeXus NXDL schema to which this file conforms. ...

Official NeXus NXDL schema to which this file conforms.

Obligatory value: NXazint1d

solid_angle_applied: (required) NX_BOOLEAN

is solid angle correction applied or not.

polarization_applied: (required) NX_BOOLEAN

is polarization correction applied or not.

normalization_applied: (required) NX_BOOLEAN

is normalization correction applied or not.

INSTRUMENT: (required) NXinstrument ⤆

name: (required) NX_CHAR ⤆

Name of instrument (beamline) where data was collected.

MONOCHROMATOR: (required) NXmonochromator ⤆

wavelength: (required) NX_FLOAT ⤆

Wavelength in angstrom.

energy: (required) NX_FLOAT ⤆

Energy in keV.

SOURCE: (required) NXsource ⤆

name: (required) NX_CHAR ⤆

Name of laboratory where data was collected.

type: (required) NX_CHAR ⤆

Type of laboratory where data was collected.

probe: (required) NX_CHAR ⤆

Type of probe.

REDUCTION: (required) NXprocess ⤆

program: (required) NX_CHAR ⤆

Name of the program that made this file.

version: (required) NX_CHAR ⤆

Version of the progam that made this file.

date: (required) NX_DATE_TIME ⤆

Date the file was created

reference: (required) NX_CHAR

Citation or other references for the algorithm used in the processing.

note: (optional) NX_CHAR

Notes required to help interpret the data, e.g. on coordinate systems.

input: (required) NXparameters

Parameters should exactly match those required by the algorithm used in th ...

Parameters should exactly match those required by the algorithm used in the processing. For example, azint requires error_model, mask, n_splitting, poni, etc.

MONITOR: (optional) NXmonitor ⤆

Monitor data for example I_zero.

data: (required) NX_NUMBER (Rank: 1, Dimensions: [nImg]) ⤆

DATA: (required) NXdata ⤆

Azimuthally integrated data with radial binning in q or 2theta.

@axes: (required) NX_CHAR ⤆

Obligatory value: ['.', 'radial_axis']

@interpretation: (required) NX_CHAR

Obligatory value: spectrum

@signal: (required) NX_CHAR ⤆

Obligatory value: I

I: (required) NX_NUMBER (Rank: 2, Dimensions: [nImg, nRad])

@long_name: (required) NX_CHAR

Obligatory value: intensity

@units: (required) NX_CHAR

Obligatory value: arbitrary units

I_errors: (optional) NX_NUMBER (Rank: 2, Dimensions: [nImg, nRad]) ⤆

@long_name: (optional) NX_CHAR

Obligatory value: estimated intensity error

@units: (optional) NX_CHAR

Obligatory value: arbitrary units

radial_axis: (required) NX_NUMBER (Rank: 1, Dimensions: [nRad]) ⤆

@long_name: (required) NX_CHAR ⤆

Any of these values: q | 2theta

@units: (required) NX_CHAR

Any of these values: NX_PER_LENGTH | NX_WAVENUMBER | NX_ANGLE

radial_axis_edges: (optional) NX_NUMBER (Rank: 1, Dimensions: [nRadEdge]) ⤆

@long_name: (required) NX_CHAR ⤆

Any of these values: q bin edges | 2theta bin edges

@units: (required) NX_CHAR

Any of these values: NX_PER_LENGTH | NX_WAVENUMBER | NX_ANGLE

norm: (optional) NX_NUMBER (Rank: 1, Dimensions: [nRad])

@long_name: (required) NX_CHAR

Obligatory value: number of pixels contributing to the corresponding bin

@units: (required) NX_CHAR

Obligatory value: arbitrary units

Hypertext Anchors

List of hypertext anchors for all groups, fields, attributes, and links defined in this class.

NXDL Source:

https://github.com/nexusformat/definitions/blob/main/contributed_definitions/NXazint1d.nxdl.xml