PSD Generation¶

Using this workflow configuration (config.yml), we can generate a median-averaged PSD across 100000 seconds of Hanford and Livingston data in O2:

# general options
start: 1187000000
stop: 1187100000
ifos: H1L1

# data discovery options
source:
  frame-type:
    H1: H1_GWOSC_O2_16KHZ_R1
    L1: L1_GWOSC_O2_16KHZ_R1
  channel-name:
    H1: GWOSC-16KHZ_R1_STRAIN
    L1: GWOSC-16KHZ_R1_STRAIN
  sample-rate: 4096
  frame-segments-file: segments.xml.gz
  frame-segments-name: datasegments

# psd options
psd:
  fft-length: 8
  sample-rate: 4096

# condor options
condor:
  accounting-group: your.accounting.group
  profile: ldas

This sets general options such as the start and end times and the detectors to analyze (H1 and L1). Data discovery options specify how to retrieve the strain data as well as specifying the file used for science segments (segments.xml.gz), and the sampling rate. PSD-specific options such as the FFT stride used.

Finally, workflow-specific options (via HTCondor) which specify options like the accounting group and the grid profile to use. If you have not done so yet, you can install grid profiles locally and check which grid profiles are currently available via:

$ gstlal_grid_profile install
$ gstlal_grid_profile list  # ldas should show up as one of the possible options

To launch the workflow via Condor with the configuration above, run:

$ gstlal_query_gwosc_segments 1187000000 1187100000 H1L1
$ gstlal_psd_workflow -c config.yml
$ condor_submit_dag psd_dag.dag