Public Data Releases

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During phase II of ZTF 50% of the ZTF camera time and 50% of SEDM time are dedicated to a 2-night cadence public survey of the entire northern sky in g & r bands. As with ZTF-I, alerts will be distributed in real time to the brokers but with the addition of forced photometry in the alert packets. SEDM spectra will be uploaded daily to TNS. Data from the public survey will be released on a bi-monthly schedule.

The ZTF Science Data System (ZSDS) is housed at IPAC-Caltech. This consists of the data processing pipelines, data archives, infrastructure for long term curation, and the services for data retrieval and visualization. An overview of the ZSDS is provided in
Masci et al. 2018, The Zwicky Transient Facility: Data Processing, Products, and Archive , PASP, 131, 995.

Pipelines, data products (including alert packets), product retrieval, formats, and usage are described in more detail in:
The ZSDS Explanatory Supplement: Pipelines, Definitions, Data Products & Access.


Access ZTF data (via IRSA)

Release Schedule

In phase II of ZTF public data releases become bi-monthly. See table below to find out when the next release comes out. You can find the schedule for past and future data releases here.

Data Release DatesDate (DD-MM-YYYY)
DR 1907-09-2023
DR 1807-07-2023
DR 1709-05-2023
DR 1609-03-2023
DR 1509-01-2023
DR 1408-11-2022
DR 1307-09-2022
DR 1207-07-2022
DR 1109-05-2022
DR 1007-03-2022
DR 905-01-2022
DR 803-11-2021
DR 731-08-2021
DR 630-06-2021
DR 531-03-2021
DR 409-12-2020
DR 324-06-2020
DR 211-12-2019
DR 108-05-2019

Data Release Guides

  • Data Release 19

      Total observation span: March 2018 - JUly 2023

      This release adds 2 months of observations to the 18th data release, up to 8 July 2023 for the public portion of the survey, and private survey time prior to 7 March 2022. The products include 50.6 million single-exposure images, 175 thousand co-added images, accompanying source catalog files containing 787 billion source detections extracted from those images, and 4.72 billion light curves constructed from the single-exposure extractions.
      Guide    Access

  • Data Release 18
  • Data Release 17
  • Data Release 16
  • Data Release 15
  • Data Release 14
  • Data Release 13
  • Data Release 12
  • Data Release 11
  • Data Release 10
  • Data Release 9
  • Data Release 8
  • Data Release 7
  • Data Release 6
  • Data Release 5
  • Data Release 4
  • Data Release 3
  • Data Release 2
  • Data Release 1