Gravitational Wave Open Science Center

The O2 Data Release

Run Overview

Get O2 Data

GWF Channel Names

See the technical details page for the channel names used in the O2 4KHZ and 16KHz GWF files (ending with extension .gwf). These are new channel names that are different than those used in S5, S6 and O1 4KHz GWF files.

O2 Detector Status

Details about the status of LIGO and Virgo detectors in O2 can be found in the GWTC-1 Catalog paper or in this web page

Folded Data

O2 data are included in the O3 release of Folded Data for Stochastic Searches.

Astrophysical Results

O2 astrophysical results are tabulated in the GWTC-1 catalog, which describes 11 compact object mergers found in O1 and O2. An overview of compact binary coalescence results in O2 detections can be found in:

For a full list of papers by the LSC and Virgo collaborations, see:

and for a list of discovery papers, see:

Data Quality Segments

A number of categories of data quality segments are available for the O2 data set. For example:

For information on how to use data quality segments, please see the technical details page.

Hardware Injections

The O2 data set contains simulated astrophysical signals, known as hardware injections, used for testing and calibration. For an example, see the Find a Hardware Injection Tutorial. For complete documentation, see:

Instrumental Spectral Lines

A power spectral density of LIGO data typically shows a number of spectral lines. Many of these are associated with known instrumental resonances. The O2 instrumental spectral lines page gives an explanation, and catalog, of these instrumental lines.

Representative PSDs

Segments for Short Fourier Transforms

Segments used for O2 SFTs are in DCC T1900085

Technical Details

GWOSC 4KHz strain data have been repackaged and downsampled from 16384 Hz to 4096 Hz. Advanced LIGO and advanced Virgo data are not calibrated or valid below 10 Hz or above 5 kHz, and the data sampled at 4096 Hz are not valid above about 1700 Hz. In most searches for astrophysical sources, data below 20 Hz are not used because the noise is too high. More detailed information about the data set can be seen on the Technical Details page.

Background data for GW170608

Additional O2 data are available in the GW170608 background data set.


To acknowledge the use of O2 data, see the Acknowledgement Page.

Data Set DOI:

Revision History