The top panel presents the photosphere 1, chromosphere, and photosphere 2 intensity variation of Alpha Centauri A. The x-axis represents the date of observation in dd-mm-yy, mm-yy, or yyyy format. The dotted purple line represents the ±1σ cutoff, the orange dotted–dashed line the ±2σ point, and the gray dashed line the ±3σ cutoff point. The red points above the +3σ line are chromospheric flaring events detected at Alpha Centauri A. The bottom panel represents the distribution of the photosphere 1, chromosphere, and photosphere 2 points around the median from CUTE, HST, and IUE. The flaring events are captured by the far right bar above the 3σ level.