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Kepler CBV Files

The Cotrending Basis Vectors for data release 23, Q17, are now available for download.

As data is reprocessed, so will the CBVs. Be sure to use CBVs with the same Data Release number as your data. Below is the current list of available Cotrending Basis Vector (CBV) files. These data products can be used to remove instrumental systematics from the Kepler light curves. There is one FITS file per quarter. Each file contains 84 extensions, one for each CCD channel, and 16 basis vectors per channel. These basis vectors can be fit to the Kepler SAP flux vector and the best fit vectors subtracted to significantly reduce systematic trends in the time series.

To download a particular file, click on the appropriate File Name below. Alternatively, ftp to archive.stsci.edu and cd to /pub/kepler/cbv/ to see and/or download the complete list. Clicking on the linked data release numbers will display the corresponding data release notes.

See the Kepler Archive Manual for a description of the CBV file format, and see Chapter 7 of the Data Characteristics Handbook for more information on the CBV characteristics and how to use them.

For a tool to fit and apply CBVs to your Kepler light curve, see keplergo.arc.nasa.gov/ContributedSoftwareKepcotrend.shtml

CBV Files

File Name Quarter Data Release Delivery Date
kplr2009131105131-q00-d21_lcbv.fits 0 21 May 9, 2013
kplr2009166043257-q01-d21_lcbv.fits 1 21 May 9, 2013
kplr2009259160929-q02-d21_lcbv.fits 2 21 May 9, 2013
kplr2009350155506-q03-d21_lcbv.fits 3 21 May 9, 2013
kplr2010078095331-q04-d21_lcbv.fits 4 21 May 9, 2013
kplr2010174085026-q05-d21_lcbv.fits 5 21 May 9, 2013
kplr2010265121752-q06-d21_lcbv.fits 6 21 May 9, 2013
kplr2010355172524-q07-d21_lcbv.fits 7 21 May 10, 2013
kplr2011073133259-q08-d21_lcbv.fits 8 21 May 10, 2013
kplr2011177032512-q09-d21_lcbv.fits 9 21 May 10, 2013
kplr2011271113734-q10-d21_lcbv.fits 10 21 May 10, 2013
kplr2012004120508-q11-d21_lcbv.fits 11 21 May 10, 2013
kplr2012088054726-q12-d21_lcbv.fits 12 21 May 10, 2013
kplr2012179063303-q13-d21_lcbv.fits 13 21 May 10, 2013
kplr2012277125453-q14-d21_lcbv.fits 14 21 May 10, 2013
kplr2013011073258-q15-d20_lcbv.fits 15 20 May 2, 2013
kplr2013098041711-q16-d22_lcbv.fits 16 22 Jul 19, 2013
kplr2013131215648-q17-d23_lcbv.fits 17 23 Dec. 5, 2013