Examples of prompt-particle events for incoming particles of different nature and energy as generated by our simulator. The events are chosen arbitrarily to represent their diversity in orientation, size, and brightness. Elongated events, such as the one depicted in the bottom centre thumbnail, are less likely to occur since they need to pass through the CCD at a rather shallow angle. The most common events are circular (e.g., middle right thumbnail), with the incoming particle passing straight through the CCD.