Using the STIX background detector as a proxy for GOES Muriel Zoë Stiefel, Matej Kuhar, Olivier Limousin, Ewan C. M. Dickson, Anna Volpara, Gordon J. Hurford and Säm Krucker A&A, 694 (2025) A138 Published online: 10 February 2025 DOI: 10.1051/0004-6361/202452574