In this paper, Seismic Data Quality (SDQ), a new application devoted to estimating the quality of the accelerometric and seismometric data recorded by the INGV National Seismic Network, is proposed. SDQ has been developed in Python with the main purpose of performing both: • a systematic compatibility comparison between the accelerometric and velocimeter data of sensors co‐located in correspondence with each seismo‐accelerometric recording site; • to assign to each recorded event waveforms a quality class. For the analyses, 230 multi‐parametric stations (i.e., equipped with both...