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K2_FFI Search Output Columns


This document defines the catalog entries describing the K2_FFI Data Archive.

Mark
Clicking on entries in this column will mark the entry for retrieval. To mark all entries, click one of the buttons labelled 'Mark All','Mark public', or 'Mark Proprietary'. (Unmarking all entries can be done the same way using the appropriate button.) For missions with proprietary data, the mark button element will have a yellow background and a '@' symbol to indicate data sets not yet public.

To Retrieve:
Click the button labelled 'Submit marked data for retrieval from STDADS'. This will send all the marked data set names to the data retrieval page. Follow the directions on the displayed pages.

To Coplot:
After selecting up to 15 observations to be plotted, click on the "Plot marked spectra" button to coplot the selected observations.

The spectra that you selected will be automatically scaled to the full range of wavelengths and nearly the full range of fluxes (i.e., y axis plot scale runs from 0 (or .25 * the minimum flux for spectra with negative fluxes) to the 10th highest flux). Each spectrum is automatically assigned a color, up to a maximum of 15.

For plotting Kepler light curves, y-axis scaling is slightly different. Plots scale simply from the minimum to the maximum flux. It is also recommended that only Kepler light curves from the same target be co-plotted due to the differences in flux values.

The spectra are labelled by their dataset names, with a summary of the datasets plotted given below the plot. After inspecting the plot, you may wish to change the selection of datasets which are displayed. Use your browser "Back" button to do this.

Plot range
Adjust the minimum and maximum wavelengths (in Angstroms) and minimum and maximum fluxes (in erg /cm2/sec/A) to select the spectral region of interest and to exclude noisy data. Note Kepler light curves are in units of time and uncalibrated fluxes.

Plot dimensions
Adjust the X size and Y size in pixels to create the size of plot desired. The maximum dimensions are 850 by 640 pixels.

Redraw plot
Use this button to replot the spectra when you have changed the plot range or plot dimensions.

Column Information

File Name
Data set name or root name.
KPLR2010140101631

Archive Class
DADS archive classification. Currently the available entries are full frame images (ffi), long and short cadence collateral files (CLL, CLS), artifact removal pixel files (ARP), background pixel files (BKG), Reverse Clock (RVC) and Ancillary Engineering data (ENG).
Valid values include FFI, CLL, CLS, ARP, BKG, RVC, and ENG.

Start Time
Planned start time in standard date format
2009-03-10 01:56:04 to 2018-01-30 09:31:44

End Time
Planned end time in standard date format
2009-03-10 02:25:29 to 2018-02-25 12:39:52

Archive Date
Date the file was ingested into MAST archive
2009-06-18 02:17:14 to 2018-05-29 18:13:39

Campaign
A sequential number indicating the K2 campaign in which exposure was made.
0 to 112

Skygroup ID
An integer value from 1 to 84 describing the module/channel where the target falls.
1 to 84

Module
Each pair of CCDs comprise a module and corresponds to four output channels (two per CCD). Each output is read out by a unique analog signal chain (e.g. amplifier).
2 to 24

Output
OUTPUT is an integer ranging from 1 to 4 describing one of the four output channels. An object can have a non-zero output number if it is off, but near, a CCD. Each module has four output channels (two per CCD). Each output is read out by a unique analog signal chain (e.g. amplifier).
1 to 4

Channel
CHANNEL is an integer ranging from 1 to 84 that uniquely specifies the MODULE/OUTPUT pair.There are 21 modules, each with 4 outputs for a total of 84 channels.
1 to 84