Data for "Observation of In-ice Askaryan Radiation from High-Energy Cosmic Rays"

Description of data products contained in this release: - events.csv: per-event reconstructed information: - event_id: unique identifier for each event. - SNR: signal-to-noise ratio (SNR), averaged over the phased-array VPol channels of ARA5. The per-channel SNR is defined as the ratio of the peak-to-peak signal amplitude and twice the thermal noise rms amplitude. - zenith_deg: zenith arrival direction of the radiation wavefront measured at the phased array. The zenith angle is measured from the vertical direction and given in degrees. - receivers.csv: information on the positions of the phased-VPol receivers: - channel: unique identifier for each receiver channel. - rel_depth_m: depth measured in meters relative to channel 0. The approximate absolute depth below the ice surface of channel 0 is 172 meters. - delay_ns: instrumental signal delay measured in nanoseconds relative to channel 0. - raw/: unprocessed sampled waveforms recorded for each event from the phased-VPol component of ARA5. Information on the architecture of the data-acquisition system and the analog signal conditioning is available in: Askaryan Radio Array Collaboration, "Design and performance of an interferometric trigger array for radio detection of high-energy neutrinos", Nucl. Instrum. Meth. A, 930 (2019), 112-125, doi:10.1016/j.nima.2019.01.067. Files are labeled by the event_id of the event they correspond to. Contents are as follows: - time_ns: sample time measured in nanoseconds relative to the beginning of the recorded trace. - ch_C: sample values for channel C, given in analog-to-digital units (ADU). - csw/: processed waveforms for each event as shown in Fig. 2 of the publication. Files are labeled by the event_id of the event they correspond to. Contents are as follows: - time_ns: time measured in nanoseconds. - csw: waveforms from all phased-VPol receivers time-aligned and co-added ("coherently summed"). The instrumental phase response is removed, and waveforms are normalized by their peak-to-peak amplitude.