ScienceGrade Summary

Catalog Products >> Product Log >> Summary
Product Identification
Real User Lisbeth Fogh Olsen
Product Creation Date 2004-12-02
Product Creation Time 12:23:49.806
User eisdata
Session 72372
Process Local
Product Type SINGLE PASSBAND
Extraction Method SExtractor
Extraction Version SExtractor 2.3.2
Survey DPS
Telescope MPI-2.2
Instrument WFI
Region DEEP3
Field DEEP3a
Passband U
ESO Filter# #877
Total Exposure Time (seconds) 35997
Product Information
Instrument WFI
Passband U
ESO Filter# #877
Magntude Type used for Reporting MAG_AUTO
Right Ascension (hh:mm:ss.s) 11:24:44.3
Declinaton (dd:mm:ss.s) -21:41:29.9
Right Ascension (decimal degrees) 171.1845
Declinaton (decimal degrees) -21.6916
Galactic longitude (degrees) 277.53
Galactic latitude (degrees) 36.8668
Total Exposure Time (seconds) 35997
Image File Name EIS.2004-11-16T02:24:57.561.fits
Catalog File Name EIS.2004-12-02T13:47:37.349.fits
Primary Catalog Information
Product Type SINGLE PASSBAND
Total Area (square degrees) 0.3864
Trimmed Area (square degrees) 0.0613
Masked Area (square degrees) 0.0024
Number of Extracted Objects 24477
Number of Saturated Objects 16
Number of Objects with SExtractor Flag > 0 2317
Number of Objects inside trimmed area 2508
Number of Objects inside masked area 477
80% Completeness Limit (Vega) 24.28
50% Completeness Limit (Vega) 24.75
Average Magnitude for Objects with MAG_AUTO error = 0.2 (Vega) 24.97
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) 0.3864
Trimmed Area (square degrees) 0.0613
Masked Area (square degrees) 0.0024
Effective Area (square degrees) 0.3228
Number of Extracted Objects 13985
Number of Galaxies 10040
Number of Stars 617
Number of Saturated Objects 16
Number of Objects with SExtractor Flag > 0 1842
Number of Objects in trimmed area 1680
Number of Objects in masked area 355
80% Completeness Limit (Vega) 23.39
50% Completeness Limit (Vega) 23.98
Average Magnitude for Objects with MAG_AUTO error = 0.2 (Vega) 24.97
Catalog Contents
Number of Columns in OBJECTS table 69
Number of Objects 13985
Number of Columns in FIELDS table 109
Number of Entries in FIELDS table 1
Number of Columns in MASKS table 1
Number of Masks 16
Number of Automatic Masks 16
Number of Masks generated by hand 0
Number of Columns in FILTER table 4
Number of Entries in FILTER table 286
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/) 131196.8
Effective Non-linearity (ADU) N/A
Effective Saturation (ADU) 102.0
Filter Properties
Passband U
ESO Filter # #877
Mean Wavelength (Angstrom) 3404.0
FWHM (Angstrom) 732.0
AB correction 1.036
AB correction applied to magnitudes in the catalog 1.036
Average E(B-V) 0.042
Standard Deviation of E(B-V) 0.00038
Relative Extinction ( A/E(B-V) ) 4.945
Computed Extinction Correction 0.207
Computed Standard Deviation of Extinction Correction 0.00188
Extinction Correction applied to magnitudes in the catalog 0.071
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 2004-12-02
Product Creation Time 12:23:49.806
User eisdata
Session 72372
Process Local
Product Type SINGLE PASSBAND
Extraction Method SExtractor
Extraction Version SExtractor 2.3.2
Survey DPS
Telescope MPI-2.2
Instrument WFI
Region DEEP3
Field DEEP3a
Passband U
ESO Filter# #877
Total Exposure Time (seconds) 35997
Product Information
RA (center of catalog) 171.1845
Dec (center of catalog) -21.6916
Maximum RA of catalog (degrees) 171.5140
Minimum RA of catalog (degrees) 170.8660
RA interval (arcmin) 0.65
Maximum Dec of catalog (degrees) -21.4217
Minimum Dec of catalog (degrees) -21.9616
Dec interval (arcmin) 0.54
Total area of catalog (square degrees) 0.3864
Object Statistics
Total Number of Objects 24477
Number of Objects inside Trimmed Area 2508
Number of Objects inside Masked Area 477
Number of Objects with SExtractor Flag > 0 2317
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 - - 25.80 25.43 24.69
1.5 - 26.09 25.38 24.97 24.22
2.0 - 25.25 25.10 24.59 23.86
2.5 - 25.21 24.93 24.36 23.59
3.0 26.09 25.13 24.72 24.16 23.40
3.5 25.80 25.00 24.57 23.98 23.21
4.0 25.28 24.94 24.44 23.82 23.01
4.5 25.43 24.77 24.27 23.71 22.94
5.0 25.40 24.61 24.21 23.59 22.81
10.0 24.64 23.75 23.30 22.72 22.02
Other Magnitudes
Magnitude Type (S/N = 1) (S/N = 2) (S/N = 3) (S/N = 5) (S/N = 10)
MAG_AUTO - 24.99 24.86 24.08 22.92
MAG_ISO - 26.85 26.19 25.17 23.82
MAG_ISOCOR - - 25.84 24.88 23.51
Simulation Results
Number of Simulated Images 3
Fading Factor 3.0,3.5,4.0
Limiting Magnitude at 80% completeness (Vega) 24.28
Limiting Magnitude at 50% completeness (Vega) 24.75
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 2004-12-02
Product Creation Time 12:23:49.806
User eisdata
Session 72372
Process Local
Product Type SINGLE PASSBAND
Extraction Method SExtractor
Extraction Version SExtractor 2.3.2
Survey DPS
Telescope MPI-2.2
Instrument WFI
Region DEEP3
Field DEEP3a
Passband U
ESO Filter# #877
Total Exposure Time (seconds) 35997
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) 0.3864
Trimmed Area (square degrees) 0.0613
Masked Area (square degrees) 0.0024
Effective Area (square degrees) 0.3228
Object Statistics
Number of Objects inside Trimmed Area 1680
Number of Objects inside Masked Area 355
Number of Objects with SExtractor Flag > 0) 1842
Final Number of Galaxies 10040
Number Density of Galaxies (galaxy/square arcmin) 8.641
Final Number of Stars 617
Number Density of Stars (stars/square arcmin) 0.531
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) 24.97
80% completeness (Vega) 24.28
Extinction corrected 5-sigma 2 arcsec (Vega) 24.76
Extinction corrected 80% completeness (Vega) 24.07
AB Magnitude System
5-sigma 2 arcsec (AB) 26.01
80% completeness (AB) 25.32
Extinction corrected 5-sigma 2 arcsec (AB) 25.80
Extinction corrected 80% completeness (AB) 25.11
Science Grade Catalog Completeness
80% completeness at m = 23.39
 
50% completeness at m = 23.98
 
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 2004-12-02
Product Creation Time 12:23:49.806
User eisdata
Session 72372
Process Local
Product Type SINGLE PASSBAND
Extraction Method SExtractor
Extraction Version SExtractor 2.3.2
Survey DPS
Telescope MPI-2.2
Instrument WFI
Region DEEP3
Field DEEP3a
Passband U
ESO Filter# #877
Total Exposure Time (seconds) 35997
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: 617
 
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     : Metcalfe et al. 2000 MNRAS in press
 
Open Triangles , short dash      : Metcalfe et al. 2000 MNRAS in press
 
Crosses        , long dashed     : Arnouts et al. (2001) astro-ph/0103071
 
            
blue dashed line:    
5 S/N MAG_AUTO magnitude limit=24.08
 
            
red line:    
Least Squares Method: fitted log(Counts)=a*Magnitude+b
 
a =  0.59; b = -9.77.
 
            
Magnitude System: Vega
 
Magnitude Type:   MAG_AUTO
.