Kinematics of the erupting filament and the Solar Orbiter/STIX HXR flux of the associated flare in three energy bands from 15 to 84 keV. (a) Filament height-time plot (blue circles) obtained from Solar Orbiter, STEREO-A, and SDO 304 Å images together with error bars (10% from the height values). The solid line shows the smoothed height–time profile. (b) Velocity and (c) acceleration of the filament obtained via numerical differentiation of the measured height-time data (dots) and the smoothed profiles (lines). The shaded areas outline the error ranges. Solar Orbiter/STIX data are shifted by the difference in travel time (+319 s) with respect to Earth.