Planned Data Services Website Outage


At 10:00am PDT (UTC-7) on 2017-04-27 there will be some maintenance being performed on the IRIS DMC database. This maintenance period is expected to last approximately 10-20 minutes.

During this time, parts of the IRIS DS website may be down and unresponsive.

QUACK is no longer in service

As of the start of 2016, QUACK has been removed from service.

The new MUSTANG QA system is now running on all seismic networks entering the DMC and QA metrics should now be accessed through MUSTANG web services.

We hope users of QUACK will experience a comfortable transition to using MUSTANG to gather quality control statistics, PDF plots, and other information as relates to IRIS data holdings. You can access MUSTANG using a web browser, command line tools, the IRISMustangMetrics R package on CRAN, and clients like the MUSTANG Databrowser and LASSO.

Please explore the following URLs for more information on how to get started:

MUSTANG web service providing statistical data:
MUSTANG databrowser web tool: /mustang/databrowser
LASSO station quality tool:
CRAN repository for the IRIS metrics API written in R:

The helicorder plots are still available at /servlet/webicorder.

Further information about IRIS Quality Assurance can be found at /ds/nodes/dmc/quality-assurance.