BatAnalysis - A Comprehensive Python Pipeline for Swift BAT Survey Analysis

The Swift Burst Alert Telescope (BAT) is a coded aperture gamma-ray instrument with a large field of view that mostly operates in survey mode when it is not triggering on transient events. After ~18 years of collecting survey data, this data has much potential to shed light on known sources and their behavior in the past and can provide insights on the search for transient and uncatalogued sources. Until now, the survey dataset has not been used to its full potential due to the complexity associated with analyzing BAT survey data and the lack of easily usable pipelines. To facilitate the increased use of this invaluable data, the Swift-BAT team has created the BatAnalysis python package. This package permits users to easily download, process, and analyze BAT survey data to produce light curves and spectra of hard X-ray sources at various time binnings. Here, we show how the BatAnalysis package can be used to analyze BAT survey data for the Crab and other sources on a variety of timescales. We also compare our results to prior analyses to verify the results obtained with the BatAnalysis package. This package is open source and is easily incorporated into more systemic analyses of BAT survey data.