Dashboards

OPM Data Quality dashboard

This dashboard monitors the quality of the empty-room data generated from the MEG-OPM system. The dataset on NYU Box is BIDS valid, so each recording lives under sub-emptyroom/ses-YYYYMMDD/meg/ and is identified by the BIDS acq-opm entity (a .fif file). For every recording the same noise metrics used for the KIT system are computed per sensor and summarised across sensors. The results are refreshed automatically by the empty-room dashboard GitHub Action.

The metric definitions and thresholds are listed in the Noise Metrics Table on the KIT dashboards page.

Latest recordings

OPM empty-room metrics per recording (most recent first)

Date	Run	Status	RMS Median (fT)	Noise Floor Median (fT/sqrtHz)	Line Noise Median (fT)	N Channels	Details
pending							pending first dashboard run

Sensor noise topography

Per sensor RMS noise for the most recent sessions, projected onto the OPM sensor layout. A localised bright spot points to a noisy or faulty sensor, while a whole map shifting to brighter colours points to a noisy session.

Noise per sensor across sessions

The heatmap below shows the RMS noise of every sensor (rows) across all sessions (columns). A bright horizontal band identifies a sensor that is consistently noisy, while a bright vertical band identifies a noisy session.

Amplitude spectrum

OPM amplitude spectrum (most recent session)

Metrics over time

OPM median sensor RMS over time

OPM median noise floor over time

OPM line noise (50 Hz) over time

OPM average, variance and maximum over time (legacy metrics)

Note

The OPM figures populate on the first run of the empty-room dashboard GitHub Action. Until then this page shows placeholders.