What is included?
Below you will find compressed tar archives of ZTF event alerts (observations
detected in image differences). Each tar
file contains alerts collected in the given night (UTC-based), with each
alert stored in a separate file in the AVRO
. To get you started, we offer a
with few basic utilities for reading AVRO-serialized data, as
well as an example
Why this service?
We are providing this archive as a stop-gap measure until public
event brokers capable of receiving and redistributing the ZTF alert stream come online. We
expect this by the end of 2018
- The data provided on this site is generated automatically, has
not yet been optimally calibrated or fully characterized, and uses evolving
algorithms. It is best suited for searches of relatively bright transients.
- The files provided contain a full, unfiltered, 5-sigma alert stream.
Depending on your science case, you may wish to improve the purity of your sample by
filtering the data
on the included attributes such as the signal-to-noise ratio or the real-bogus score.