These are a list of routines that are usful for EIS analysis. If you find others useful let us know and they can be added to the SSW tree.
eis_auto_fit.pro : This routine takes the output from EIS_GETWINDATA and performs a fit over the intensity array, returning values for the intensity, line width and centroid.
eis_datagetwindata.pro : Returns EIS data from a detector window.
eis_datagetwinheader.pro: Returns the FITS header for a spectral window
eis_debias.pro: Removes the CCD bias from an EIS data window.
eis_despike.pro: EIS_DESPIKE is used for de-spiking, i.e. to remove cosmic ray spikes from the pixel data.
eis_exposure_times.pro : This routine extracts the start times of each exposure in an EIS data object. The times are given in seconds relative to the first exposure.
eis_find_window.pro: Given the a header structure for an EIS data-set, this routine checks if the specified wavelength, WVL, is found in the data-set's wavelength windows. If yes, then the index of the wavelength window is returned.
eis_get_hdr_struc.pro: This routine extracts selected information from an EIS data header into a structure. The particular fields taken from the header are defined in the file $SSW/hinode/eis/idl/analysis/headcat_tags.txt.
eis_get_iwin.pro: To find the data window given the line id or the wavelength.
eis_get_wininfo.pro : To return information on the windows contained in an eis fits file.
eis_getdata.pro: EIS_GETDATA is a script to extract data (one, sevceral or all line windows) from a (FITS or CCSDS) data file.
eis_getlambda.pro : get the wavelength range of the CCDs
eis_getmoments.pro: EIS_GETMOMENTS is a script to calculate moments from one, several or all spectral line windows from a (fits or CCSDS) data file.
eis_getwindata.pro: Returns EIS data from one spectral window.
eis_orbit_correction.pro: Calculates the wavelength vector for each exposure in the EIS data-set, corrected for the orbital variation.
eis_orbit_spline_quick.pro: Represents the orbital variation of EIS line centroids by a spline function with nodes spaced at 5 minute intervals. Returns the value of the centroid at the input times.
