Colour–magnitude diagrams with absolute G derived using Gaia EDR3 parallaxes. The same typical stellar field was used for bulge (upper plot) and disc (lower plot) as in Fig. 9 (black/blue points), with the cut on parallax_over_error >  1. The baseline magnitudes from Level 1 were used to show microlensing events for G-band as well as for the colour computation. Baseline magnitudes most likely indicate the source for non-blended events (fs >  0.9) and the lens for highly blended events (fs <  0.2).