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Public Data Releases

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Overview

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.

Upcoming Data ReleasesDate (DD-MM-YYYY)
DR 1609-03-2023
DR 1509-01-2023
DR 1408-11-2022
DR 1307-09-2022
DR 1207-07-2022

Data Release Guides

  • Data Release 11

      Total observation span: March 2018 - March 2022

      This release builds upon the ninth data release to include products from (i) an additional 2 months of survey operations from the public portion of the survey up to 9 March 2022, and (ii) data acquired under private survey time prior to 6 November 2020. The private surveys include observational programs awarded by Caltech and performed by the ZTF collaboration.
      The products include ~38 million single-exposure images, ~164,400 co-added images, accompanying source catalog files containing ~628 billion source detections extracted from those images, and 4.2 billion light curves constructed from the single-exposure extractions.
      Guide    Access

  • 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