ScienceGrade Summary

Catalog Products >> Product Log >> Summary
Product Identification
Real User Lisbeth Fogh Olsen
Product Creation Date 2004-11-30
Product Creation Time 15:38:49.851
User eisdata
Session 72185
Process Local
Product Type SINGLE PASSBAND
Extraction Method SExtractor
Extraction Version SExtractor 2.3.2
Survey XMM
Telescope MPI-2.2
Instrument WFI
Region XMM-08
Field NGC4666
Passband V
ESO Filter# #843
Total Exposure Time (seconds) 4399
Product Information
Instrument WFI
Passband V
ESO Filter# #843
Magntude Type used for Reporting MAG_AUTO
Right Ascension (hh:mm:ss.s) 12:45:07.4
Declinaton (dd:mm:ss.s) -0:26:51.6
Right Ascension (decimal degrees) 191.2810
Declinaton (decimal degrees) -0.4477
Galactic longitude (degrees) 299.5254
Galactic latitude (degrees) 62.3823
Total Exposure Time (seconds) 4399
Image File Name EIS.2004-11-15T20:25:01.789.fits
Catalog File Name EIS.2004-11-30T16:29:56.373.fits
Primary Catalog Information
Product Type SINGLE PASSBAND
Total Area (square degrees) 0.3171
Trimmed Area (square degrees) 0.0184
Masked Area (square degrees) 0.0036
Number of Extracted Objects 23078
Number of Saturated Objects 23
Number of Objects with SExtractor Flag > 0 2436
Number of Objects inside trimmed area 1032
Number of Objects inside masked area 503
80% Completeness Limit (Vega) 23.84
50% Completeness Limit (Vega) 24.42
Average Magnitude for Objects with MAG_AUTO error = 0.2 (Vega) 24.82
Science Catalog Information
Magnitude Type used for Filtering MAG_AUTO
Signal-to-Noise limit 5.0
Classification Magnitude Limit 21.5
ClassStar Limit for selecting stars 0.95
Limiting Magnitude for Masking 0
Mask Size Factor (Half Diagonal=factor*A_WORLD) 20
Maximum Half Diagonal for Masks (arcsecs) 126
Total Area (square degrees) 0.3171
Trimmed Area (square degrees) 0.0184
Masked Area (square degrees) 0.0036
Effective Area (square degrees) 0.2951
Number of Extracted Objects 11762
Number of Galaxies 8522
Number of Stars 845
Number of Saturated Objects 23
Number of Objects with SExtractor Flag > 0 1844
Number of Objects in trimmed area 535
Number of Objects in masked area 327
80% Completeness Limit (Vega) 23.26
50% Completeness Limit (Vega) 23.66
Average Magnitude for Objects with MAG_AUTO error = 0.2 (Vega) 24.82
Catalog Contents
Number of Columns in OBJECTS table 69
Number of Objects 11762
Number of Columns in FIELDS table 109
Number of Entries in FIELDS table 1
Number of Columns in MASKS table 1
Number of Masks 23
Number of Automatic Masks 23
Number of Masks generated by hand 0
Number of Columns in FILTER table 4
Number of Entries in FILTER table 500
Instrument Properties
Instrument WFI
Pixel Scale (arcsec) 0.238
Field-of-View (square arcmin) 0.3117
Gain (electrons/ADU) -
Non-linearity (ADU) N/A
Saturation (ADU) 50000.0
Effective Gain (electrons/) 10591.1
Effective Non-linearity (ADU) N/A
Effective Saturation (ADU) 190.0
Filter Properties
Passband V
ESO Filter # #843
Mean Wavelength (Angstrom) 5378.3
FWHM (Angstrom) 900.0
AB correction -0.009
AB correction applied to magnitudes in the catalog -0.009
Average E(B-V) 0.023
Standard Deviation of E(B-V) 0.00024
Relative Extinction ( A/E(B-V) ) 3.194
Computed Extinction Correction 0.074
Computed Standard Deviation of Extinction Correction 0.00077
Extinction Correction applied to magnitudes in the catalog 0.054
Telescope Response and Filter Transmission Curves
Telescope response function (green) and filter transmission (red) curves
.

Primary Attributes

Catalog Products >> Product Log >> Primary Catalog >> Attributes
Product Identification
Real User Lisbeth Fogh Olsen
Product Creation Date 2004-11-30
Product Creation Time 15:38:49.851
User eisdata
Session 72185
Process Local
Product Type SINGLE PASSBAND
Extraction Method SExtractor
Extraction Version SExtractor 2.3.2
Survey XMM
Telescope MPI-2.2
Instrument WFI
Region XMM-08
Field NGC4666
Passband V
ESO Filter# #843
Total Exposure Time (seconds) 4399
Product Information
RA (center of catalog) 191.2810
Dec (center of catalog) -0.4477
Maximum RA of catalog (degrees) 191.5590
Minimum RA of catalog (degrees) 191.0010
RA interval (arcmin) 0.56
Maximum Dec of catalog (degrees) -0.1799
Minimum Dec of catalog (degrees) -0.7154
Dec interval (arcmin) 0.54
Total area of catalog (square degrees) 0.3171
Object Statistics
Total Number of Objects 23078
Number of Objects inside Trimmed Area 1032
Number of Objects inside Masked Area 503
Number of Objects with SExtractor Flag > 0 2436
Star/Galaxy Classification
Magnitude Type for Classification MAG_AUTO
Star/Galaxy Classification Method adopted Simple Method
Magnitude Limit Applied for "Simple" Star/Galaxy Classification 21.5
CLASS_STAR Limit Applied for "Simple" Star/Galaxy Classification 0.95
Galaxy/Star Classification
Adopted star/galaxy separation method using stellar index.
Limiting Magnitude (VEGA)
Aperture Magnitudes
Aperture (arcsec) (S/N = 1) (S/N = 2) (S/N = 3) (S/N = 5) (S/N = 10)
1.0 - 26.17 25.78 25.28 24.47
1.5 - 25.83 25.30 24.82 24.07
2.0 - 25.30 25.04 24.52 23.74
2.5 25.14 25.18 24.81 24.27 23.52
3.0 25.70 24.97 24.62 24.10 23.32
3.5 25.59 24.88 24.46 23.94 23.16
4.0 25.48 24.72 24.32 23.78 23.02
4.5 25.22 24.64 24.19 23.65 22.90
5.0 25.21 24.54 24.08 23.54 22.78
10.0 24.60 23.76 23.29 22.78 22.04
Other Magnitudes
Magnitude Type (S/N = 1) (S/N = 2) (S/N = 3) (S/N = 5) (S/N = 10)
MAG_AUTO - 24.96 24.74 23.93 22.83
MAG_ISO - 26.68 26.14 25.03 23.69
MAG_ISOCOR - - 25.84 24.74 23.43
Simulation Results
Number of Simulated Images 3
Fading Factor 3.0,3.5,4.0
Limiting Magnitude at 80% completeness (Vega) 23.84
Limiting Magnitude at 50% completeness (Vega) 24.42
Catalog Completeness
Completeness of the catalog estimated from the comparison between real and simulated data.
 
The simulations were created by fading the original image by 0.5 magnitudes but keeping the same background noise
Estimate of Magnitude errors and bias
Average of SExtractor magnitude error
Results from using the Negative Image
Statistics of Spurious Objects
Fraction of false positives as a  function of magnitude for different values of S/N
Spatial Distribution of Spurious Objects
Spatial distribution of spurious objects estimated from false positives
.

ScienceGrade Attributes

Catalog Products >> Product Log >> Science Grade Catalog >> Attributes
Product Identification
Real User Lisbeth Fogh Olsen
Product Creation Date 2004-11-30
Product Creation Time 15:38:49.851
User eisdata
Session 72185
Process Local
Product Type SINGLE PASSBAND
Extraction Method SExtractor
Extraction Version SExtractor 2.3.2
Survey XMM
Telescope MPI-2.2
Instrument WFI
Region XMM-08
Field NGC4666
Passband V
ESO Filter# #843
Total Exposure Time (seconds) 4399
Filtering Settings
Magnitude Type for Catalog Filtering MAG_AUTO
Signal to Noise Filtering Threshold 5.0
Magnitude Upper Limit 99.9
Magnitude Lower Limit 0.0
Star/Galaxy Classification Method adopted Simple Method
Magnitude Limit Applied for "Simple" Star/Galaxy Classification 21.5
CLASS_STAR Limit Applied for "Simple" Star/Galaxy Classification 0.95
Product Information
Total Area (square degrees) 0.3171
Trimmed Area (square degrees) 0.0184
Masked Area (square degrees) 0.0036
Effective Area (square degrees) 0.2951
Object Statistics
Number of Objects inside Trimmed Area 535
Number of Objects inside Masked Area 327
Number of Objects with SExtractor Flag > 0) 1844
Final Number of Galaxies 8522
Number Density of Galaxies (galaxy/square arcmin) 8.021
Final Number of Stars 845
Number Density of Stars (stars/square arcmin) 0.795
Smooth Density Plot
Smooth object density distribution,generated by applying a top-hat window of ... arcmin in diameter
Projected Distribution
Projected Distribution of science grade catalog. In the figure are shown:
 
 1) galaxies (blue); stars (magenta); trimmed objects (red crosses); masked objects (black crosses); other discarded objects red squares).
 
Also shown are the automatic masks placed by the system around bright stars, as defined in the configuration file (red losangles)
Limiting Magnitudes
Vega Magnitude System
5-sigma 2 arcsec (Vega) 24.82
80% completeness (Vega) 23.84
Extinction corrected 5-sigma 2 arcsec (Vega) 24.75
Extinction corrected 80% completeness (Vega) 23.77
AB Magnitude System
5-sigma 2 arcsec (AB) 24.81
80% completeness (AB) 23.83
Extinction corrected 5-sigma 2 arcsec (AB) 24.74
Extinction corrected 80% completeness (AB) 23.76
Science Grade Catalog Completeness
80% completeness at m = 23.26
 
50% completeness at m = 23.66
 
red: completeness function
 
blue: 50 and 80 percent completeness levels linearly interpolated between bins
 
Magnitude System: Vega
 
Magnitude Type: MAG\_AUTO
.

Verification

Catalog Products >> Product Log >> Primary Catalog >> Verifcation
Product Identification
Real User Lisbeth Fogh Olsen
Product Creation Date 2004-11-30
Product Creation Time 15:38:49.851
User eisdata
Session 72185
Process Local
Product Type SINGLE PASSBAND
Extraction Method SExtractor
Extraction Version SExtractor 2.3.2
Survey XMM
Telescope MPI-2.2
Instrument WFI
Region XMM-08
Field NGC4666
Passband V
ESO Filter# #843
Total Exposure Time (seconds) 4399
Number Counts
Star Counts with comparison with Galactic model
              
STAR COUNTS COMPARED WITH GALACTIC MODEL
 
              
Solid dots: EIS data
 
Cyan line: Galactic model, not corrected for catalog completeness 
Blue line: Galactic model, corrected for catalog completeness
 
Red dotted line: magnitude limit for the star/galaxy classification
 
Magenta dotted line: 2 arcsec - 5 sigma limiting magnitude
 
Number of stars in the catalog: 845
 
Magnitudes are Vega in the instrument natural system (WFI)
 
Model data averaged over 2 simulations.
 
Errors on model calculated as the standard deviation of the values in the different simulations.
 
Errors on the real counts are: 1+sqrt(N + 0.75)
Galaxy Counts
Solid Squares: EIS data
 
            
Solid Triangles, dotted line     : Arnouts et al. (1999) A&A 341 64
 
            
blue dashed line:    
5 S/N MAG_AUTO magnitude limit=23.93
 
            
red line:    
Least Squares Method: fitted log(Counts)=a*Magnitude+b
 
a =  0.41; b = -5.67.
 
            
Magnitude System: Vega
 
Magnitude Type:   MAG_AUTO
.