This dataset contains the public Gravitational Wave Open Science Center O4a strain release at 16,384 Hz for H1, L1. Each detector is represented independently. A contiguous source span produces three Parquet files: Strain, DQmask, and Injmask. This research has made use of data or software obtained from the Gravitational Wave Open Science Center (gwosc.org), a service of the LIGO Scientific Collaboration, the Virgo Collaboration, and KAGRA. This material is based upon work supported by NSF's LIGO Laboratory which is a major facility fully funded by the National Science Foundation, as well as the Science and Technology Facilities Council (STFC) of the United Kingdom, the Max-Planck-Society…