X-ray flux observed in the GOES long (1.55–12 keV) and GOES short (3.1–24.8 keV) channels by SUNSTORM 1/XFM-CS (black, gray), GOES-16/XRS (dark green, dark mauve), and GOES-18/XRS (light green, light mauve). The SolO/STIX 6–10 keV light curve is shown in violet. The horizontal dashed lines mark the 10⁻⁵ and 10⁻⁶ GOES M- and C-class flux thresholds, respectively. Periodic data gaps are seen in XFM-CS data due to the instrument being in the Earth’s shadow.