I’ve created my own analysis pipeline using obspy for my shake data. I’m using a downloaded copy of the instrument response file in XML format to extract displacement values. The instrument response file appears to be available relatively soon from the servers after connecting a new RS3D/4D to the network. I did notice however that every so often there was a problem with the download at which point the obspy call to retrieve the instrument response fails.
To counter this I have simply downloaded the response files for my shakes and am using them “offline”, i.e. simply loading them in obspy like so:
inv = obspy.read_inventory("response_filename.xml")
The question now beckons how long these can reasonably be used for? I’ve been running the oldest shake I have for about 3 weeks now, always with the same response file, and the displacement data I am getting looks reasonable.