CTI Correction Code

Discussion topics for individual codes
Post Reply
Posts: 255
Joined: Mon Nov 14, 2011 4:32 am
Location: Maryland, USA

CTI Correction Code

Post by kcd » Sat Jul 20, 2013 7:02 am

[c]CTI Correction Code[/c][/b]
Abstract: Charge Transfer Inefficiency (CTI) due to radiation damage above the Earth's atmosphere creates spurious trailing in images from Charge-Coupled Device (CCD) imaging detectors. Radiation damage also creates unrelated warm pixels, which can be used to measure CTI. This code provides pixel-based correction for CTI and has proven effective in Hubble Space Telescope Advanced Camera for Surveys raw images, successfully reducing the CTI trails by a factor of ~30 everywhere in the CCD and at all flux levels. The core is written in java for speed, and a front-end user interface is provided in IDL. The code operates on raw data by returning individual electrons to pixels from which they were unintentionally dragged during readout. Correction takes about 25 minutes per ACS exposure, but is trivially parallelisable to multiple processors.

Credit: Massey, Richard; Stoughton, Chris; Leauthaud, Alexie; Rhodes, Jason; Koekemoer, Anton; Ellis, Richard; Shaghoulian, Edgar

Site: http://community.dur.ac.uk/r.j.massey/acs/CTE/

Bibcode: 2013ascl.soft07015M

ID: ascl:1307.015
Last edited by Ada Coda on Sun Jan 20, 2019 6:27 pm, edited 1 time in total.
Reason: Updated code entry.

Post Reply