# Changes between Version 23 and Version 24 of DatabaseBasedAnalysis/Spectrum

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Timestamp:
Dec 3, 2019, 5:30:30 PM (10 months ago)
Comment:

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Unmodified
 v23 $\epsilon(E, \theta) = \epsilon(E, \theta, \Delta T(\theta))$ That means that for a correct calculation of the efficiency, the number of simulated events per zenith angle interval has to match the observation time distribution. This can be achieved by applying zenith angle dependent weights \(\omega(\theta)\] to each simulated event. As the simulated energy spectrum is independent of zenith angle, it can be expressed as $N_0(E,\theta) = N_0\cdot \eta(E)\cdot \eta(\theta)$ with $\int\eta(E) dE = \int\eta(\theta) d\theta = 1$