The Carnegie Supernova Project I photometry data release of low-redshift stripped envelope supernovae

The first phase of the Carnegie Supernova Project (CSP-I) was a dedicated supernova follow-up program based at the Las Campanas Observatory that collected science data of young, low-redshift supernovae between 2004 and 2009. Presented in this paper is the CSP-I photometric data release of low-redshift stripped-envelope core-collapse supernovae. The data consist of optical (uBgVri) photometry of 34 objects, with a subset of 26 having near-infrared (YJH) photometry. Twenty objects have optical pre-maximum coverage with a subset of 12 beginning at least five days prior to the epoch of B-band maximum brightness. In the near-infrared, 17 objects have pre-maximum observations with a subset of 14 beginning at least five days prior to the epoch of J-band maximum brightness. Analysis of this photometric data release is presented in companion papers focusing on techniques to estimate host-galaxy extinction and the light-curve and progenitor star properties of the sample. The analysis of an accompanying visual-wavelength spectroscopy sample of similar to 150 spectra will be the subject of a future paper.Danish Agency for Science and Technology and Innovation Instrument-center for Danish Astrophysics (IDA) VILLUM FONDEN 13261 NSF PHY-1066293 PHY-1607611 Millennium Center for Supernova Science - Programa Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile P10-064-F US National Science Foundation (NSF) AST-0306969 AST-0607438 AST-0908886 AST-1008343 AST-1211916 AST-1613426 AST-1613455 AST-1613472 TABASGO Foundation Christopher R. Redlich Fund Miller Institute for Basic Research in Scienc