Software Downloads – ISPAQ


Version 1 Breaklog 2 Language(s) Release date Group(s) 3


Python , R




IRIS System for Portable Assessment of Quality (ISPAQ) is a command line application that calculates seismic data quality metrics locally, by leveraging MUSTANG R-code within a Python client. For LINUX and macOS.

The project is hosted on GitHub:


ISPAQ can calculate over 40 MUSTANG-style data quality metrics using either local miniSEED files or data available through any Data Center that supports FDSN web services. These metrics include basic trace statistics, metrics based on miniSEED state-of-health flags (if available), metrics based on event arrivals, and metrics derived from Power Spectral Densities (PSD). PSDs and Probability Density Functions (PDF) can be output as text files. PDFs can also be output as plots. All results are computed and stored on the user’s local machine.


Data Quality , Web Service Client

External Developers

  • Jonathan Callahan, Mazama Science (MAZ)

1 – Click the version release to view details about each package release including screenshots, manuals/how–to's, and revision histories. If more than one version is listed it means that a specific set of functionality was added or removed and legacy versions that preserve behaviors are archived.

2 – A list of changes that are not backwards compatible. More than one version of a package will be listed if this field has an entry.

3 – Development group(s) responsible. If IRIS and another group is listed, this usually means IRIS funded an external group for development.

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