▁In ▁the ▁FA ST Q ▁file ▁created ▁by ▁B G I / M G I ▁sequ enc ers ▁using ▁DNA ▁nan ob alls ▁on ▁a ▁pattern ed ▁array ▁flow cell , ▁the ▁read ▁names ▁look ▁like ▁this : ▁ ▁B G I SE Q - 5 0 0 : ▁CL 1 0 0 0 2 5 2 9 8 L 1 C 0 0 2 R 0 5 0 _ 2 4 4 5 4 7 ▁ ▁M G I SE Q - 2 0 0 0 : ▁V 1 0 0 0 0 6 4 3 0 L 1 C 0 0 1 R 0 1 8 6 1 3 8 8 3 ▁ ▁Read ▁names ▁can ▁be ▁parsed ▁to ▁extract ▁three ▁variables ▁describing ▁the ▁physical ▁location ▁of ▁the ▁read ▁on ▁the ▁pattern ed ▁array : ▁( 1 ) ▁tile / region , ▁( 2 ) ▁x ▁coordinate , ▁and ▁( 3 ) ▁y ▁coordinate . ▁Note ▁that , ▁due ▁to ▁the ▁order ▁of ▁these ▁variables , ▁these ▁read ▁names ▁cannot ▁be ▁n atively ▁parsed ▁by ▁Pic ard ▁Mark D up licates ▁in ▁order ▁to ▁identify ▁optical ▁duplicates . ▁However , ▁as ▁there ▁are ▁none ▁on ▁this ▁platform , ▁this ▁pos es ▁no ▁problem ▁to ▁Pic ard - based ▁data ▁analysis . ▁ ▁Dup licates ▁ ▁Because ▁DNA ▁nan ob alls ▁remain ▁conf ined ▁their ▁sp ots ▁on ▁the ▁pattern ed ▁array ▁there ▁are ▁no ▁optical ▁duplicates ▁to ▁cont end ▁with ▁during ▁bio in format ics ▁analysis ▁of ▁sequ encing ▁reads .