Data Listings
This page contains a listing of all data products served by Pitt-Google Alert Broker and includes the connection information needed for access.
All data is served through public data repositories in Google Cloud. Pitt-Google’s Google Cloud project ID, which will be needed for access, is:
# Pitt-Google's Google Cloud project ID
ardent-cycling-243415
For examples of how to use the information on this page, please see our API Reference and User Demos repo.
Zwicky Transient Facility (ZTF)
ZTF is a wide-field, optical survey producing an alert stream at a rate of 10^5 - 10^6 per night.
Pub/Sub Alert Streams
Topic |
Description |
|---|---|
Data Streams |
|
ztf-alerts |
ZTF alert stream in Pub/Sub, cleaned of duplicate alerts. Messages contain the original alert bytes and metadata. |
ztf-lite |
Lite version of ztf-alerts (every alert, subset of fields). |
ztf-tagged |
ztf-lite with basic categorizations such as “is pure” and “is likely extragalactic transient” added to the message metadata to aid filtering. |
ztf-SuperNNova |
ztf-tagged plus SuperNNova classification results (Ia vs non-Ia). |
Notification Streams |
|
ztf-alert_avros |
One message per alert indicating that the Avro file is available in a Cloud Storage bucket. The file and bucket names are in the message attributes. Messages contain no data. |
Testing Stream |
|
ztf-loop |
Recent messages from the ztf-alerts stream, published at a rate of 1 per second. This stream is intended for testing and development use cases. |
BigQuery Tables
Dataset |
Table |
Description |
|---|---|---|
ztf |
alerts_v4_02 |
Alert data for ZTF schema version 4.02. This table is an archive of the ztf-alerts Pub/Sub stream, excluding image cutouts and metadata. It has the same schema as the original alert bytes (except cutouts), including nested and repeated fields. Equivalent tables exist for previous schema versions: alerts_v3_3, alerts_v3_1, alerts_v3_0, alerts_v1_8. |
ztf |
SuperNNova |
Results from a SuperNNova (Möller & de Boissière, 2019) Type Ia supernova classification (binary). |
Cloud Storage Buckets
Bucket |
Description |
|---|---|
ardent-cycling-243415-ztf_alerts_v4_02 |
Alert data for ZTF schema version 4.02. This bucket is an Avro file archive of the ztf-alerts Pub/Sub stream, including image cutouts and metadata. Each alert is stored as a separate Avro file. The filename syntax is: <ztf_topic>/<objectId>/<candid>.avro. Equivalent buckets exist for previous schema versions: v3_3, v3_1, v3_0, v1_8. |
LIGO-Virgo-KAGRA (LVK)
LVK is a gravitational wave collaboration producing an alert stream at a rate of 50 - 100 per day.
Pub/Sub Alert Streams
Topic |
Description |
|---|---|
Data Streams |
|
lvk-alerts |
LVK alert stream in Pub/Sub. Messages contain the original alert bytes and metadata. |
BigQuery Tables
Dataset |
Table |
Description |
|---|---|---|
lvk |
alerts_v1_0 |
Alert data from the LVK O4 observing run. This table is an archive of the lvk-alerts Pub/Sub stream. It has the same schema as the original alert bytes, including nested and repeated fields. |
Legacy Survey of Space and Time (LSST)
LSST is an upcoming wide-field, optical survey that is currently in the commissioning phase and producing an alert stream that is suitable for testing and development. LSST is expected to produce on average 10^7 alerts per night.
Pub/Sub Alert Streams
Topic |
Description |
|---|---|
Data Streams |
|
lsst-alerts |
LSST alert stream in Pub/Sub, cleaned of duplicate alerts. Messages contain the original alert bytes and metadata. |
BigQuery Tables
Dataset |
Table |
Description |
|---|---|---|
lsst |
alerts_v7_4 |
Alert data for LSST schema version 7.4. This table is an archive of the lsst-alerts Pub/Sub stream, excluding image cutouts and metadata. It has the same schema as the original alert bytes (except cutouts), including nested and repeated fields. Equivalent tables exist for previous schema versions: alerts_v7_3, alerts_v7_1. |
Cloud Storage Buckets
Bucket |
Description |
|---|---|
ardent-cycling-243415-lsst_alerts |
Alert data for LSST. This bucket is an Avro file archive of the lsst-alerts Pub/Sub stream, including image cutouts and metadata. Each alert is stored as a separate Avro file. The filename syntax is: <schema_version>/<alert_date>/<diaObjectId>/<diaSourceId>.avro. For example, v7_3/2026-10-01/3516505565058564097/3527242976319242284.avro. |