Cloud Data Access

IRSA datasets are available on Amazon Web Services (AWS) S3 cloud storage. The files are hosted through the AWS Open Data Sponsorship Program, allowing them to be downloaded or accessed directly without credentials or egress charges.

Accessing IRSA Data on AWS S3

Here are some key terms for accessing data on S3:

There are many ways to access the buckets, including:

SPHEREx

Bucket name:    nasa-irsa-spherex
Bucket region:   us-east-1

Browsable directories: https://nasa-irsa-spherex.s3.us-east-1.amazonaws.com/index.html

AWS Open Data Registry page: https://registry.opendata.aws/spherex-qr/

See SPHEREx Data Products for more information about the following products and SPHEREx Data Access for the file naming conventions.

Quick Release 2 (QR2)

IRSA began releasing SPHEREx QR2 data on a weekly basis in October 2025. QR2 features substantially improved calibrations and supersedes QR1.

Data products:

 Spectral Images (FITS)
 Spectral Images (extension 1), per-pixel status and processing flags (2), variance map (3), zodiacal model (4),
 exposure-averaged PSF (5), and wavelength WCS (6). Organized by planning period.
  - S3 prefix: qr2/level2

 Absolute Gain Matrix (FITS)
 Pixel-to-pixel gain variations within a single spectral channel and relative gain differences across channels.
  - S3 prefix: qr2/abs_gain_matrix

 Exposure-Averaged PSF (FITS)
 Wavelength-dependent point spread function (PSF) estimates on a fine positional grid across each detector.
  - S3 prefix: qr2/average_psf

 Dark Current (FITS)
 Per pixel dark current.
  - S3 prefix: qr2/dark

 Dichroic (FITS)
 Map of pixels affected by flux attenuation due to the dichroic filter.
  - S3 prefix: qr2/dichroic

 Gain Factors (YAML)
 Gain factors for each detector.
  - S3 prefix: qr2/gain_factors

 Non-functional Pixel Map (FITS)
 Map of permanently non-functioning pixels.
  - S3 prefix: qr2/nonfunc

 Non-Linearity Correction (FITS)
 Corrections applied to compensate for detector non-linearity due to gain degradation.
  - S3 prefix: qr2/nonlinear_pars

 Readout Noise (FITS)
 Per-detector read noise maps.
  - S3 prefix: qr2/readnoise_pars

 Solid Angle Pixel Map (FITS)
 Measure of the solid angle per pixel in units of squared arcsec.
  - S3 prefix: qr2/solid_angle_pixel_map

 Spectral WCS Map (FITS)
 Detailed World Coordinate System (WCS) map.
  - S3 prefix: qr2/spectral_wcs

Quick Release 1 (QR1)

Data products:

 Spectral Images (FITS)
 Spectral Images (extension 1), per-pixel status and processing flags (2), variance map (3), zodiacal model (4),
 exposure-averaged PSF (5), and wavelength WCS (6). Organized by planning period.
  - S3 prefix: qr/level2

 Absolute Gain Matrix (FITS)
 Pixel-to-pixel gain variations within a single spectral channel and relative gain differences across channels.
  - S3 prefix: qr/abs_gain_matrix

 Exposure-Averaged PSF (FITS)
 Wavelength-dependent point spread function (PSF) estimates on a fine positional grid across each detector.
  - S3 prefix: qr/average_psf

 Dark Current (FITS)
 Per pixel dark current.
  - S3 prefix: qr/dark

 Dichroic (FITS)
 Map of pixels affected by flux attenuation due to the dichroic filter.
  - S3 prefix: qr/dichroic

 Gain Factors (YAML)
 Gain factors for each detector.
  - S3 prefix: qr/gain_factors

 Non-functional Pixel Map (FITS)
 Map of permanently non-functioning pixels.
  - S3 prefix: qr/nonfunc

 Non-Linearity Correction (FITS)
 Corrections applied to compensate for detector non-linearity due to gain degradation.
  - S3 prefix: qr/nonlinear_pars

 Readout Noise (FITS)
 Per-detector read noise maps.
  - S3 prefix: qr/readnoise_pars

 Spectral WCS Map (FITS)
 Detailed World Coordinate System (WCS) map.
  - S3 prefix: qr/spectral_wcs

Euclid

Quick Release 1 (Q1)

Bucket name:    nasa-irsa-euclid-q1
Bucket region:   us-east-1

Browsable directories: https://nasa-irsa-euclid-q1.s3.us-east-1.amazonaws.com/index.html

AWS Open Data Registry page: https://registry.opendata.aws/euclid-q1/

Data products:

 MER (FITS)
 Level 2 multiwavelength space- and ground-based mosaics, organized by Tile ID.
  - S3 prefix: q1/MER

 MER_SEG (FITS)
 Segmentation maps of detections made on the MER mosaics, organized by Tile ID.
  - S3 prefix: q1/MER_SEG

 NIR (FITS)
 Level 2 YJH NISP calibrated frames, organized by Observation ID.
  - S3 prefix: q1/NIR

 VIS (FITS)
 Level 2 VIS calibrated frames, organized by Observation ID.
  - S3 prefix: q1/VIS

 SIR (FITS)
 2D spectroscopic science frames and 1D spectra, organized by Observation ID.
  - S3 prefix: q1/SIR

 VMPZ (FITS)
 Level 3 visibility masks.
  - S3 prefix: q1/VMPZ

 RAW (FITS)
 Level 1 VIS and NISP raw frames, organized by Observation ID.
  - S3 prefix: q1/RAW

 Catalogs (FITS)
 MER final catalog, photometric redshift catalogs, spectroscopic catalogs organized by Tile ID.
 NIR and VIS catalogs of calibrated frame detections, organized by Observation ID.
  - S3 prefix: q1/catalogs

Enhanced Contributed Data Products:

 Merged Catalogs (Parquet; HATS Collection)
 MER final catalog, photometric redshift catalogs, and spectroscopic catalogs joined on MER Object ID into a
 single Parquet dataset (HATS Catalog).
  - S3 prefix: contributed/q1/merged_objects/hats

WISE

Bucket name:    nasa-irsa-wise
Bucket region:   us-west-2

Browsable directories: https://nasa-irsa-wise.s3.us-west-2.amazonaws.com/index.html

AllWISE

AWS Open Data Registry page: https://registry.opendata.aws/wise-allwise/

Data products:

 Images Atlas (FITS)
 For file naming conventions, see AllWISE IBE docs and Map IBE to cloud paths.
  - S3 prefix: wise/allwise/images/p3am_cdd

Enhanced Contributed Data Products:

 Source Catalog (Parquet; HEALPix partitioned)
  - S3 prefix: wise/allwise/catalogs/p3as_psd/healpix_k5
  - Parquet name: wise-allwise.parquet

All-Sky

AWS Open Data Registry page: https://registry.opendata.aws/wise-allsky/

Data products:

 Single-exposure Image Sets (FITS)
 For file naming conventions, see All-Sky IBE docs and Map IBE to cloud paths.
  - S3 prefix: wise/allsky/images/4band_p1bm_frm

3-Band Cryo

AWS Open Data Registry page: https://registry.opendata.aws/wise-cryo-3band/

Data products:

 Single-exposure Image Sets (FITS)
 For file naming conventions, see 3-Band Cryo IBE docs and Map IBE to cloud paths.
  - S3 prefix: wise/cryo-3band/images/3band_p1bm_frm

Post-Cryo

AWS Open Data Registry page: https://registry.opendata.aws/wise-postcryo/

Data products:

 Single-exposure Image Sets (FITS)
 For file naming conventions, see Post-Cryo IBE docs and Map IBE to cloud paths.
  - S3 prefix: wise/postcryo/images/2band_p1bm_frm

NEOWISE Reactivation

Bucket name:    nasa-irsa-wise
Bucket region:   us-west-2

Browsable directories: https://nasa-irsa-wise.s3.us-west-2.amazonaws.com/index.html

NEOWISE-R

AWS Open Data Registry page: https://registry.opendata.aws/wise-neowiser/

Data products:

 Single-exposure Image Sets (FITS)
 For file naming conventions, see NEOWISE-R IBE docs and Map IBE to cloud paths.
  - S3 prefix: wise/neowiser/images/p1bm_frm

Enhanced Contributed Data Products:

 Single-exposure Source Table (Parquet; HEALPix partitioned)
 Composed of yearly data releases plus an addendum, stored separately.
 Replace "{PART}" below with either "yearN" (where N is an integer, 1-11) or "addendum".
  - S3 prefix: wise/neowiser/catalogs/p1bs_psd/healpix_k5/{PART}
  - Parquet name: neowiser-healpix_k5-{PART}.parquet

Spitzer

Bucket name:    nasa-irsa-spitzer
Bucket region:   us-west-2

Browsable directories: https://nasa-irsa-spitzer.s3.us-west-2.amazonaws.com/index.html

Spitzer Enhanced Imaging Products (SEIP)

AWS Open Data Registry page: https://registry.opendata.aws/spitzer-seip

Data products:

 Super Mosaics (FITS)
  - S3 prefix: spitzer/seip/seip_science/images

Zwicky Transient Facility (ZTF)

Bucket name:    ipac-irsa-ztf
Bucket region:   us-east-1

Browsable directories: https://ipac-irsa-ztf.s3.us-east-1.amazonaws.com/index.html

AWS Open Data Registry page: https://registry.opendata.aws/ztf/

Data Release 23 (DR23)

Enhanced Contributed Data Products:

 Objects Table (Parquet; HATS Collection)
  - S3 prefix: contributed/dr23/objects/hats

 Lightcurves (Parquet; HATS Collection)
  - S3 prefix: contributed/dr23/lc/hats

unWISE

Bucket name:    nasa-irsa-wise
Bucket region:   us-west-2

Browsable directories: https://nasa-irsa-wise.s3.us-west-2.amazonaws.com/index.html

AWS Open Data Registry page: https://registry.opendata.aws/wise-unwise/

Enhanced Contributed Data Products:

 Time-Domain Catalog (Parquet; HEALPix partitioned)
  - S3 prefix: unwise/neo7/catalogs/time_domain/healpix_k5
  - Parquet name: unwise-neo7-time_domain-healpix_k5.parquet

OpenUniverse 2024 Matched Rubin and Roman Simulations

Bucket name:    nasa-irsa-simulations
Bucket region:   us-east-1

Browsable directories: https://nasa-irsa-simulations.s3.us-east-1.amazonaws.com/index.html

AWS Open Data Registry page: https://registry.opendata.aws/openuniverse2024/

Preview

Data products:

 Preview of Roman simulated data products (FITS, Parquet)
  - S3 prefix: openuniverse2024/roman/preview

 Preview of Rubin simulated data products (FITS, Parquet)
  - S3 prefix: openuniverse2024/rubin/preview

Full area release

Data products:

 Full area release of Roman simulated data products (FITS, Parquet)
  - S3 prefix: openuniverse2024/roman/full

 Full area release of Rubin simulated data products (FITS, Parquet)
  - S3 prefix: openuniverse2024/rubin/full

Requesting additional datasets: If there are other IRSA holdings that you would like us to make available in the cloud, please contact IRSA's Help Desk.