Fraction of transits that will not contribute a BP/RP observation to the processing leading to Gaia DR3 due to either the window not having been acquired (orange line), or to the window being truncated (blue line), or to the window having been observed with multiple gates active within the window (red line). The green line shows the total effect. This is shown as a function of the on-board magnitude estimate as this is the parameter that defines the observation strategy applied to each observation. Truncation for instance is only applied to 1D windows and therefore the corresponding fraction is zero for on-board magnitude brighter than 11.5 mag.