data:data_analysis_manual
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data:data_analysis_manual [2024/03/29 14:21] eric buchlin [Find data] format warning |
data:data_analysis_manual [2025/01/09 11:25] (current) eric buchlin Moved Python line fitting |
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| The data levels, FITS files, and headers are described in | The data levels, FITS files, and headers are described in | ||
| - | * The [[https://spice-wiki.ias.u-psud.fr/lib/exe/fetch.php/public:spice-uio-dpdd-0002-1.8-data_product_description_document_spicefits_.pdf|Data Products Description Document]] (DPDD) | + | * The [[https://spice-wiki.ias.u-psud.fr/lib/exe/fetch.php/public:spice-uio-dpdd-0002-2.1-data_product_description_document_spicefits_.pdf|Data Products Description Document]] (DPDD) |
| * The LLDPDD for the Low-Latency (LL) files | * The LLDPDD for the Low-Latency (LL) files | ||
| Line 191: | Line 191: | ||
| | d->get\_number\_windows() | No. of spectral windows | | | d->get\_number\_windows() | No. of spectral windows | | ||
| | d->get\_window\_data(i,/load) | Extract a data window | | | d->get\_window\_data(i,/load) | Extract a data window | | ||
| - | | d->get\_lambda\_vector(i) | Get wavelength vector for the window | | + | | d->get\_lambda\_vector(i) | Get wavelength vector for the window | |
| + | | d->get\_time\_vector(i) | Get the mid-time for each exposure | | ||
| | d->get\_header(i) | Extract a data window header | | | d->get\_header(i) | Extract a data window header | | ||
| | d->get\_window\_id(i) | Get the data window ID | | | d->get\_window\_id(i) | Get the data window ID | | ||
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| ==== Line fitting ==== | ==== Line fitting ==== | ||
| - | === Using EIS fitting software for SPICE === | + | For IDL Gaussian fitting software, please check: **[[data:line_fitting_idl|IDL software for emission line fitting]]**. |
| - | The routine spice\_getwindata returns a "windata" structure in a form compatible with the eis\_auto\_fit suite of routines for Hinode/EIS. Further information on these routines is given in [[https://doi.org/10.5281/zenodo.6339584 | + | Fitting in Python can be done with any fitting library, including [[https://docs.astropy.org/en/stable/modeling/|astropy.modelling]]. From astropy 7.0, there is a user-friendly way of doing the fitting in parallel ([[https://github.com/aperiosoftware/parallel-modeling-examples/blob/main/spice/Final_Tutorial.ipynb|tutorial]] by Stuart Mumford). |
| - | |EIS Software Note 15]]. The mask spectra fitting routines (Case 2 in the document) do not currently work with SPICE, however. | + | |
| - | The EIS software enable a number of operations to be performed on windata structures, as described in [[https://sohoftp.nascom.nasa.gov/solarsoft/hinode/eis/doc/eis_notes/21_WINDATA/eis_swnote_21.pdf|EIS Software Note 21]]. For example, eis\_bin\_windata allows spatial binning of the rasters. | ||
| - | If you have problems running the EIS software on SPICE data, please contact [[https://science.gsfc.nasa.gov/sed/bio/peter.r.young|Dr. Peter Young]]. | ||
| === Line window width and spectral tilt === | === Line window width and spectral tilt === | ||
data/data_analysis_manual.1711718513.txt.gz · Last modified: 2024/03/29 14:21 by eric buchlin
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