Poisson noise subtracted, squared fractional rms normalised Astrosat PDSs of different intervals of the outburst. The first Astrosat observation in the LHS is marked in black, all other PDSs originate from different regions of the second Astrosat observation, which contains flip-flops (see Fig. 12). Both the LHS and Flip-flop dim state 1 PDSs have inflated widths due to being generated from a large time interval containing a variable type C QPO frequency. Generating the PDS for shorter intervals yields a narrower QPO. The same is not true for the type A QPOs seen in the bright states.