An empirical model of the Gaia DR3 selection function

Precomputed maps of the M10 parameter used to predict the completeness of the Gaia DR3 source catalogue.

allsky_M10_hpx7.hdf5 is a tessellation of the whole sky in Galactic nested healpix scheme of order 7.

allsky_uniq_10.fits uses an adaptive resolution and is based on the 'uniq' numbering of healpix tiles. Regions of higher density use a finer resolution, up to order 10, chosen so that every tile contains a minimum of twenty sources to compute M10 from.

Paper: https://ui.adsabs.harvard.edu/abs/2023A%26A...669A..55C/abstract

Tutorial using the GaiaUnlimited python package to query these maps: https://github.com/gaia-unlimited/gaiaunlimited/blob/main/docs/notebooks/dr3-empirical-completeness.ipynb

Documentation for the GaiaUnlimited package: https://gaiaunlimited.readthedocs.io/en/latest/

用于预测盖亚第三批数据发布（Gaia DR3）源星表完备性的M10参数预计算映射图。
allsky_M10_hpx7.hdf5 是一套基于7阶银道坐标系嵌套式HEALPix（healpix）像素化方案的全天区剖分数据集。
allsky_uniq_10.fits 采用自适应分辨率，基于HEALPix像素块的"uniq"编号规则构建。密度更高的区域使用最高10阶的精细化分辨率，选取规则为每个像素块至少包含20个源点以用于计算M10参数。
相关研究论文：https://ui.adsabs.harvard.edu/abs/2023A%26A...669A..55C/abstract
用于查询此类映射图的GaiaUnlimited Python包教程：https://github.com/gaia-unlimited/gaiaunlimited/blob/main/docs/notebooks/dr3-empirical-completeness.ipynb
GaiaUnlimited 软件包官方文档：https://gaiaunlimited.readthedocs.io/en/latest/