ConvertGaiaXpManager

class lsst.meas.algorithms.ConvertGaiaXpManager(filenames, config, file_reader, indexer, schema, key_map, htmRange, addRefCatMetadata, log)

Bases: ConvertRefcatManager

Special-case convert manager for Gaia XP spectrophotometry catalogs, that have fluxes/flux errors, instead of magnitudes/mag errors. The input flux and error values are in units of W/Hz/(m^2) (Gaia Collaboration, Montegriffo et al. 2022). The the flux and fluxErr fields in the output catalog have units of nJy.

Methods Summary

computeCoord(row, ra_name, dec_name)	Create an ICRS coord.
getCatalog(pixelId, schema, nNewElements)	Get a catalog from disk or create it if it doesn't exist.
run(inputFiles)	Index a set of input files from a reference catalog, and write the output to the appropriate filenames, in parallel.

Methods Documentation

static computeCoord(row, ra_name, dec_name)

Create an ICRS coord. from a row of a catalog being converted.

Parameters:

rownumpy.ndarray

Row from catalog being converted.

ra_namestr

Name of RA key in catalog being converted.

dec_namestr

Name of Dec key in catalog being converted.

Returns:

coordlsst.geom.SpherePoint

ICRS coordinate.

getCatalog(pixelId, schema, nNewElements)

Get a catalog from disk or create it if it doesn’t exist.

Parameters:

pixelIddict

Identifier for catalog to retrieve

schemalsst.afw.table.Schema

Schema to use in catalog creation it does not exist.

nNewElementsint

The number of new elements that will be added to the catalog, so space can be preallocated.

Returns:

cataloglsst.afw.table.SimpleCatalog

The new or read-and-resized catalog specified by dataId.

run(inputFiles)

Index a set of input files from a reference catalog, and write the output to the appropriate filenames, in parallel.

Parameters:

inputFileslist

A list of file paths to read data from.

Returns:

outputdict [int, str]

The htm ids and the filenames that were written to.