  The unprecedented capabilities of state-of-the-art segmented
germanium-detector arrays, such as AGATA and GRETA, derive from the possibility
of performing pulse-shape analysis. The comparison of the net- and
transient-charge signals with databases via grid-search methods allows the
identification of the $\gamma$-ray interaction points within the segment
volume. Their precise determination is crucial for the subsequent
reconstruction of the $\gamma$-ray paths within the array via tracking
algorithms, and hence the performance of the spectrometer. In this paper the
position uncertainty of the deduced interaction point is investigated using the
bootstrapping technique applied to $^{60}$Co radioactive-source data. General
features of the extracted position uncertainty are discussed as well as its
dependence on various quantities, e.g. the deposited energy, the number of
firing segments and the segment geometry.
