GCN Circular 33072
K.L. Page (U. Leicester), M.G. Bernardini (INAF-OAB), E. Ambrosi (INAF-IASFPA) , M. Capalbi (INAF-IASFPA), J. D. Gropp (PSU), S. Dichiara (PSU), J.A. Kennea (PSU), A.P. Beardmore (U. Leicester) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: Swift-XRT has performed follow-up observations of the Swift/BAT-GUANO-detected burst GRB 221215A, collecting 2.8 ks of Photon Counting (PC) mode data between T0+97.3 ks and T0+113.8 ks. No X-ray sources have been detected consistent with being within 296 arcsec of the Swift/BAT-GUANO position. The 3-sigma upper limit in the field is 0.005 ct s^-1, corresponding to a 0.3-10 keV observed flux of 1.9e-13 erg cm^-2 s^-1 (assuming a typical GRB spectrum). An uncatalogued was detected, however this was too far from the GRB position to be the afterglow. The results of the XRT-team automatic analysis of the XRT observations, including a position-specific upper limit calculator, are available at https://www.swift.ac.uk/ToO_GRBs/00021533. This circular is an official product of the Swift-XRT team.