Overview of match probabilities. The left panel shows a histogram of pulsar−match probabilities (black, solid line) and the expected number of pulsar detections N_exp above a certain threshold of (black, dashed), after visual inspection. The green and blue dashed lines indicate the expected numbers of young pulsars and MSPs above the respective threshold. The right panel shows the dependence of the expected number of detections with the number of investigated X-ray sources N_inv for all pulsars and the two subsets in green and blue. The shaded regions indicate the expected statistical error on the predicted number.