A typical DEER experiment will employ a phase cycle to account for undesired coherence pathways and imperfect spectrometer calibration. However, the requirement to measure both real and imaginary components of the traces precludes the application of a phase cycle involving the detection sequence. By using an incoherent microwave source to generate the pump pulses, it is possible to remove 𝑡-dependent 'echo-crossing' artefacts experimentally, but this does not affect static offsets or partially filtered magnetisation and so these must be considered in data analysis. To account for static offsets we recognise that the background decay parameter, 𝑘, for a given sample is dependent only on the fraction of spins in the sample excited by the pump pulse. All DEER and DEERATom traces recorded with the same pump pulse should have the same background decay parameter, allowing the offsets to be isolated. Since it is not possible to conveniently calibrate the excitation fraction of the filter pulses, we instead analysed the data at a range of filter pulse flip probabilities, 𝑃 =>?6 , treating the recorded traces as the sum over filtered, partially filtered, and unfiltered magnetisation.