Gravitational Wave Open Science Center

Just give me the data!

GWOSC data is available on the LIGO data grid (LDG). It can be easily accessed using the GWOSC example API.
gsissh ldas-pcdev1.ligo.caltech.edu
$ export PYTHONPATH=$PYTHONPATH:/home/losc/py
$ ipython
> import readligo as rl
> strain, meta, dq = rl.getstrain(860000000, 860005000,'H1')
> print strain
That's it! You got some data!

The variable strain is now a numpy array of strain values, between gps meta['start'] and meta['stop']. The time between samples (in seconds) can be seen in the variable meta['dt']. Currently, GWOSC data is sampled at 4096 Hz. For more examples and documentation, try typing help(rl) or follow the links below.

What's next?

  • Since there are, in general, gaps in the data, we must work with segments of contiguous data:
  • To get started making plots and finding signals, see the tutorials page.
  • For more documentation on reading LIGO data and segments with Python, see the GWOSC Example API page.