NuSTAR observations of Circinus fitted with clumpy torus model without inner ring component. For visualisation, the data are binned here to 1000 counts and deconvolved with the model. Additionally, a warm mirror component (orange dotted line, see Sect. 4.3) and lines at rest-frame energy 6.5 and 7.1 keV were added to the fit. The best fit has a LOS column density of N_H = 3 × 10²⁴ cm⁻² and a photon index of Γ = 1.69. This model rises already at ∼8 keV and produces a shallow Compton hump. In contrast, the data remain flat until 10 keV before rising steeply. This leads to substantial systematic residuals (positive at 6 keV, negative at 10 keV, positive at 20–30 keV) in the lower panel.