Galex Release EMphot 3Quality page for GROTH_00
Images
NUV
FUV
Image from the GALEX Pipeline
Intensity map (J2000). GALEX FOV image in counts per second per pixel, corrected for relative response.
Residual image
Galex image minus the EMPhot simulated objects and the background, with masked regions in green.
Catalog comparison - EMPhot versus GALEX Pipeline
The following plots are made with all sources (stars and galaxies). The source matching between EMPhot and GALEX positions is done by finding sources within a 2" radius. The magnitudes are not corrected from the galactic extinction.
NUV
FUV
Histogram of magnitudes
Count per square degree and per mag with the sources estimated by EMPhot and the GALEX pipeline (including stars). In the NUV band the magnitude is corrected from the bias due to the background.
SNR from the estimated error
With the error estimated from the residual.
Scatter plot of the difference
Isolated sources (distance to the nearest neighbor greater than 10") are the cyan dots. the mean and standard deviation is given for the isolated compact (blue points) and extended (red points) sources.
Simulations
NUV
FUV
Histogram of the estimated magnitude
With a color-coded error between the simulated and estimated magnitudes: blue for an absolute error smaller than 0.3 mag., green and yellow for an error greater than 0.3 mag.
The bottom plot show the percentage of detected objects for three SNR thresholds.
Scatter plot of the magnitude true error
With the mean and standard deviation of the magnitude true error.
Scatter plot of the flux true error
With the mean and standard deviation of the flux true error.
Standard deviation of fluxes
With flux errors converted to a magnitude scale.
Estimated SNR from residual
With a comparison to the theoretical SNR.