The raw sequencing reads have names formatted as follows: <instrument>:<run number>:<flowcell ID>:<lane>:<tile>:<x-pos>:<y-pos> (https://help.basespace.illumina.com/articles/descriptive/fastq-files/; last accessed February 11, 2020). For example, the first record in dataset ERR3790565 has a read name of A00363:103:H3CMMDRXX:1:1101:21124:1000, which indicates that the sequencer ID is A00363, and this dataset was generated on its 103rd run, on a flow cell with ID H3CMMDRXX. This read was generated in lane 1, on tile 1101, with x position 21,124 and y position 1000. Our algorithm parses the read name to obtain information on sequencer, flow cell, and tiles according to this format.
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