The Swift X-ray Telescope Cluster Survey: data reduction and cluster catalog for the GRB fields E. Tundo, A. Moretti, P. Tozzi, L. Teng, P. Rosati, G. Tagliaferri and S. Campana A&A, 547 (2012) A57 Published online: 26 October 2012 DOI: 10.1051/0004-6361/201219038