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astroPT_euclid_desi_dataset

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astroPT_euclid_desi_dataset / README.md

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metadata

dataset_info:
  features:
    - name: object_id
      dtype: int64
    - name: targetid
      dtype: int64
    - name: redshift
      dtype: float64
    - name: RGB_image
      dtype: image
    - name: VIS_image
      sequence:
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    - name: NISP_Y_image
      sequence:
        sequence: float32
    - name: NISP_J_image
      sequence:
        sequence: float32
    - name: NISP_H_image
      sequence:
        sequence: float32
    - name: sed_data
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        - name: flux_r_ext_megacam_1fwhm_aper
          dtype: float64
        - name: flux_u_ext_megacam_1fwhm_aper
          dtype: float64
        - name: flux_vis_1fwhm_aper
          dtype: float64
        - name: flux_y_1fwhm_aper
          dtype: float64
        - name: flux_z_ext_decam_1fwhm_aper
          dtype: float64
        - name: flux_z_ext_hsc_1fwhm_aper
          dtype: float64
    - name: spectrum
      struct:
        - name: error
          sequence: float64
        - name: flux
          sequence: float64
        - name: wavelength
          sequence: float64
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  download_size: 16358854040
  dataset_size: 16943277634
configs:
  - config_name: default
    data_files:
      - split: train_batch_1
        path: data/train_batch_1-*
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        path: data/train_batch_15-*
      - split: train_batch_16
        path: data/train_batch_16-*
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        path: data/train_batch_17-*
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        path: data/train_batch_18-*
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        path: data/train_batch_19-*
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        path: data/train_batch_20-*
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      - split: train_batch_24
        path: data/train_batch_24-*
      - split: train_batch_25
        path: data/train_batch_25-*
      - split: test_batch_1
        path: data/test_batch_1-*
      - split: test_batch_2
        path: data/test_batch_2-*
      - split: test_batch_3
        path: data/test_batch_3-*
      - split: test_batch_4
        path: data/test_batch_4-*
      - split: test_batch_5
        path: data/test_batch_5-*
      - split: test_batch_6
        path: data/test_batch_6-*
      - split: test_batch_7
        path: data/test_batch_7-*

DESI EDR × Euclid AstroPT Q1 Dataset

Dataset Description

This dataset contains the cross-matched catalog between DESI Early Data Release (EDR) and sample of Quick Data Release 1 (Q1) data from Euclid Consortium: Siudek et al. 2025 (arXiv:2503.15312).

Dataset Summary

Total Sources: 15,263 galaxies
Cross-match Radius: 0.5 arcsec
Data Products:
- Euclid VIS imaging
- Euclid NISP imaging (Y, J, H bands)
- DESI spectra with spectroscopic redshifts
- metadata: catalog of DESI logM and Z values.
  For more details, see Siudek et al. 2024 and Siudek et al. 2025b.
  The metadata catalog is available at https://huggingface.co/datasets/msiudek/astroPT_euclid_metadata (e.g., select entries where DESI_TARGETID is not null).

Source Data

DESI Sample Selection

Applied quality cuts to DESI EDR:

ZCAT_PRIMARY == True
ZWARN == 0 or ZWARN == 4
COADD_FIBERSTATUS == 0
SPECTYPE != 'STAR'
Z > 0

Euclid Sample Selection

From Euclid Consortium: Siudek et al. 2025 (arXiv:2503.15312).

Usage

from datasets import load_dataset

dataset = load_dataset("msiudek/astroPT_euclid_desi_dataset")

Citation

If you use this dataset, please cite:

Siudek et al. 2025

@ARTICLE{2025arXiv250315312S,
       author = {{Siudek}, M. and collaborators},
        title = "{Euclid Consortium Paper Title}",
      journal = {arXiv e-prints},
         year = 2025,
        month = mar,
          eid = {arXiv:2503.15312},
        pages = {arXiv:2503.15312},
archivePrefix = {arXiv},
       eprint = {2503.15312},
}

@dataset{euclid_desi_edr_q1,
  author = {Siudek, M. and collaborators},
  title = {DESI EDR × Euclid Q1 Cross-matched Dataset},
  year = {2025},
  publisher = {Hugging Face},
  url = {https://huggingface.co/datasets/msiudek/astroPT_euclid_desi_dataset}
}