PSDs fits (continuous line) to Model A (left) and Model B (right) for the Mrk 335 data (ObsID 306870101) using the broad (0.2−10 keV) energy band. The dashed lines shows the two components of the model: constant Poisson noise and the source PSD model (power-law, left; bending power-law, right). The dot-dashed line shows the “global” 90% confidence limit use to flag QPO candidates. Appendix B shows the corresponding figures for the complete sample.