data:data_analysis_manual
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data:data_analysis_manual [2022/03/31 23:46] Peter Young [Flare lines] |
data:data_analysis_manual [2022/08/27 10:04] eric buchlin [Find data] link to using the catalog in IDL |
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| SPICE papers: | SPICE papers: | ||
| * Instrument paper: //Astron. Astrophys.//, **642**, A14, 2020. [[https://doi.org/10.1051/0004-6361/201935574|DOI]], [[https://ui.adsabs.harvard.edu/abs/2020A%26A...642A..14S|ADS]] | * Instrument paper: //Astron. Astrophys.//, **642**, A14, 2020. [[https://doi.org/10.1051/0004-6361/201935574|DOI]], [[https://ui.adsabs.harvard.edu/abs/2020A%26A...642A..14S|ADS]] | ||
| - | * First results: Submitted | + | * First results: //Astron. Astrophys.//, **656**, A38, 2021. [[https://doi.org/10.1051/0004-6361/202141221|DOI]], [[https://ui.adsabs.harvard.edu/abs/2021A%26A...656A..38F/abstract|ADS]] |
| * In-flight calibration: Not available yet | * In-flight calibration: Not available yet | ||
| * Other papers can be found in the [[https://ui.adsabs.harvard.edu/public-libraries/rIi8Zx4zTg2stP5nTojx2Q|SPICE ADS library]] | * Other papers can be found in the [[https://ui.adsabs.harvard.edu/public-libraries/rIi8Zx4zTg2stP5nTojx2Q|SPICE ADS library]] | ||
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| The full SPICE data set (to be cited in papers) has a DOI: [[https://doi.org/10.5270/esa-lbmdy7c|doi:10.5270/esa-lbmdy7c]]. DOIs will also be attributed to each data release. | The full SPICE data set (to be cited in papers) has a DOI: [[https://doi.org/10.5270/esa-lbmdy7c|doi:10.5270/esa-lbmdy7c]]. DOIs will also be attributed to each data release. | ||
| + | |||
| + | When browsing the SPICE catalog and archive you will see the following codes: | ||
| + | |||
| + | **n-ras**: a raster scan with one of the narrow slits (2", 4" or 6")\\ | ||
| + | **w-ras**: a raster scan with the wide slit (30")\\ | ||
| + | **n-sit**: a sit-and-stare study with one of the narrow slits\\ | ||
| + | **w-sit**: a sit-and-stare study with the wide slit\\ | ||
| + | **n-exp**: a single exposure with a narrow slit that yields the entire spectrum\\ | ||
| + | **w-exp**: a single exposure with the wide slit that yields the entire spectrum | ||
| + | |||
| + | For the "ras" data, the FITS file contains a single raster scan. If the raster is repeated, then each repeat goes in a new file. | ||
| + | |||
| + | Rasters can be performed in the "exp" mode, but each exposure will end up in a different FITS file. | ||
| ===== Find data ===== | ===== Find data ===== | ||
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| * The catalogue file generated from all SPICE files is accessible [[http://astro-sdc-db.uio.no/vol/spice/fits/spice_catalog.txt|through the UiO website]] (restricted to SPICE team) | * The catalogue file generated from all SPICE files is accessible [[http://astro-sdc-db.uio.no/vol/spice/fits/spice_catalog.txt|through the UiO website]] (restricted to SPICE team) | ||
| * How to use it in [[data:data_analysis_manual:read_catalog_python|Python]] | * How to use it in [[data:data_analysis_manual:read_catalog_python|Python]] | ||
| + | * How to use it in IDL: [[data:data_analysis_manual#the_spice_catalog|see below]] | ||
| * A CSV export of the part of the catalogue corresponding to each release is provided with the release. | * A CSV export of the part of the catalogue corresponding to each release is provided with the release. | ||
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| | 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\_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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| Use a 3-button mouse to browse the images and spectra: the middle button allows you to select a new pixel, the left button zooms in and the right button zooms out. | Use a 3-button mouse to browse the images and spectra: the middle button allows you to select a new pixel, the left button zooms in and the right button zooms out. | ||
| + | |||
| + | |||
| + | ===== Ephemeris information ===== | ||
| + | |||
| + | You can access ephemeris information from the SPICE headers. For example, the keywords: | ||
| + | |||
| + | DSUN\_AU - distance of the spacecraft from the Sun in AU\\ | ||
| + | EAR\_TDEL - light travel time from the spacecraft to Earth (seconds) | ||
| + | |||
| + | The full list of keywords is given in the [[https://spice.ias.u-psud.fr/spice-data/documents/SPICE-UIO-DPDD-0002-1.4-Data_Product_Description_Document.pdf|DPDD]] - search for "Solar ephemeris keywords". | ||
| + | |||
| + | Users should make sure to correct the SPICE observing times for EAR\_TDEL in order to compare with observations from Earth-orbiting spacecraft. This is especially important for highly-dynamic structures such as flares or CMEs. | ||
| + | |||
| ===== Read and display data (Python) ===== | ===== Read and display data (Python) ===== | ||
data/data_analysis_manual.txt · Last modified: 2024/03/29 14:21 by eric buchlin
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