Papers › UVIT Data Release version 7: Regenerated high-level UVIT data products
UVIT Data Release version 7: Regenerated high-level UVIT data products
Prajwel Joseph, S. N. Tandon, S. K. Ghosh, C. S. Stalin
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The Ultra-Violet Imaging Telescope (UVIT) on board AstroSat is an active telescope capable of high-resolution far-ultraviolet imaging (<1.5'') and low resolution (λ/δλ ≈ 100) slitless spectroscopy with a field of view as large as ~0.5 degrees. Now almost a decade old, UVIT continues to be operational and generates valuable data for the scientific community. UVIT is also capable of near-ultraviolet imaging (<1.5''); however, the near-ultraviolet channel stopped working in August 2018 after providing data for nearly three years. This article gives an overview of the latest version (7.0.1) of the UVIT pipeline and UVIT Data Release version 7. The high-level products generated using pipeline versions having a major version number of seven will be called "UVIT Data Release version 7". The latest pipeline version overcomes the two limitations of the previous version (6.3), namely (a) the inability to combine all episode-wise images and (b) the failure of the astrometry module in a large fraction of the observations. The procedures adopted to overcome these two limitations, as well as a comparison of the performance of this new version over the previous one, are presented in this paper. The UVIT Data Release version 7 products are available at the Indian Space Science Data Center of the Indian Space Research Organisation for archival and dissemination from 01 June 2024. The new pipeline version is open source and made available on GitHub.
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