TITLE: GCN CIRCULAR NUMBER: 28336 SUBJECT: GRB 200901A: Swift-XRT observations DATE: 20/09/01 05:22:59 GMT FROM: Phil Evans at U of Leicester D.N. Burrows (PSU), J.A. Kennea (PSU), M. Perri (ASDC), G. Tagliaferri (INAF-OAB), P.A. Evans (U. Leicester) and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team: The XRT began observing the field of GRB 200901A at 04:38:21.9 UT, 3050.4 seconds after the BAT trigger. No source was detected in 1.9 ks of promptly downlinked data, which covered 54% of the BAT error circle. We are waiting for the full dataset to detect and localise the XRT counterpart.