times the duty cycles of each instrument. The area of consideration is estimated in two ways. The first estimate is simply the area of the full disk of the Sun. The second estimate assumes that there are four active regions on the Sun each with an area of $240''\times240''$, and that the majority of the duty cycle is spent examining the active-region areas. These two estimates give an upper and lower range to the percentage field of view. The percentage field of view is calculated as the percentage of the area of consideration covered by the average field-of-view of the instrument disk. The duty cycle is estimated as the percentage of the time that the instrument could have observed a flare. Crucially, the estimates assume that a *random* location within the area of consideration (either the full disk of the Sun, or an estimated average area of active regions that the instrument could point to, assuming that active regions form the majority of target areas during the duty cycle).

[max width=]{}

  ---------------- ------------ --------- -------------- -------------- --
  Instrument                                “Expected”      Measured    
                    Duty cycle    %FOV     Success Rate   Success Rate  
                                              ${e}$          ${m}$      
  RHESSI               50%        100%         50%            58%       
  SDO/EVE MEGS-A       100%       100%         100%           100%      
  