MAG, Solar Orbiter magnetometer

The Solar Orbiter MAG magnetometer is a high performance dual fluxgate instrument, with data rates up to 128 vectors/s from each sensor. Each sensor has a noise level of around 5pT at 1 Hz, allowing access to the ion kinetic regime and, near perihelion, access to electron kinetic phenomena at tens of Hz. Significant signals from spacecraft subsystems and other instruments can be present in the raw data. Extensive cleaning is undertaken to remove as much of the artificial signals as possible, resulting in what is normally a very high quality data set, but some artifacts are present on occasion. Level 2 data files contain the best estimates of the magnetic field and have signals from the spacecraft and other instrument removed; flags within the files indicate the quality of the data as a function of time. Normal mode data coverage is nearly complete. Burst mode coverage varies from a few minutes a day to complete, depending on available telemetry. Level 0 and 1 data files include data from both inboard and outboard sensors.