ZTF Zubercal DR16 × Gaia DR3 Variability Classification

This dataset contains ZTF Zubercal DR16 sources cross-matched with Gaia DR3 variability classifications, served as a HATS (Hierarchically Adaptive Tiling Scheme) catalog. The HATS catalog was built using the data preparation pipeline at ASTRA framework.

File structure

• hats/ — HATS catalog directory, accessible via LSDB
• tfrecord/ — TFRecord files for data ingestion
  • train/ — Pre-training split containing multi-filter light curves
  • val/ — Validation split used for monitoring pre-training and evaluating downstream tasks

Accessing the HATS catalog

Install LSDB and huggingface_hub with:

pip install lsdb huggingface_hub

Then open the catalog:

import lsdb

catalog = lsdb.open_catalog("hf://datasets/snad-space/astra-zubercaldr16_gaiadr3vclassre-hats/hats")

Data sources

ZTF Zubercal DR16 Photometric data from the ZTF Zubercal catalog. Please cite Bellm et al. (2019) when using this data.

Gaia DR3 Variability Classification Variability classifications from the Gaia DR3 catalog. Please cite Rimoldini et al. (2023) when using this data.

HATS format Please cite Caplar et al. (2025) when using the HATS catalog format.