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gaia early data release 3 documentation

10 Catalogue statistics and plots

10.1 Catalogue statistics and plots

Author(s): Claus Fabricius, Francesca Figueras, Albert Garcia-Gutierrez, Albert Masip, Pau Ramos, Mercè Romero-Gómez, Michael Weiler

The data fields of the main table of the Gaia Catalogue are described in Section 12.1.1. A summary of statistics and plots by the Gaia Analysis Tool (GAT) on these fields for the 1 811 709 771 sources is presented in Table 10.1 and a selection of figures also from GAT is included in the following pages.

Table 10.1: The following table contains the minimum and maximum values, mean and standard deviation for numeric Catalogue fields. AL (resp. AC) designate the Gaia along-scan (resp. across-scan) measurements.
Field name Null values Minimum Maximum Mean Std. dev.
astrometric_chi2_al 0 2.73 5.78e+09 3.19e+03 6.42e+05
astrometric_excess_noise 0 0 1.13e+03 1.45 5.41
astrometric_excess_noise_sig 0 0 1.94e+08 97.7 2.17e+04
astrometric_gof_al 0 -31.9 1.04e+04 3.1 21
astrometric_matched_transits 0 5 178 32.1 18
astrometric_n_bad_obs_al 0 0 299 1.61 2.65
astrometric_n_good_obs_al 0 10 1.56e+03 277 156
astrometric_n_obs_ac 0 0 1.52e+03 1.59 24.7
astrometric_n_obs_al 0 12 1.56e+03 279 157
astrometric_params_solved 0 3 95 56.9 38.4
astrometric_sigma5d_max 0 0.00994 2.63e+10 1.07e+04 1.76e+06
b 0 -90 90 -1.28 15.6
bp_g 269681608 -8.43 7 0.687 0.487
bp_rp 270939282 -7.35 10.2 1.61 0.625
dec 0 -90 90 -18.4 36.5
dec_error 0 0.0043 100 1.38 3.96
dec_parallax_corr 343964953 -0.992 0.978 -0.0942 0.242
dec_pmdec_corr 343964953 -0.997 0.997 -0.201 0.342
dec_pmra_corr 343964953 -0.993 0.99 -0.0533 0.215
dec_pseudocolour_corr 929381662 -0.937 0.917 0.0115 0.146
dr2_radial_velocity 1804499940 -619 624 -3.14 47.3
dr2_radial_velocity_error 1804499940 0.11 20 1.87 2.44
dr2_rv_nb_transits 0 0 201 0.0333 0.618
dr2_rv_template_fe_h 1804499940 -5 1 -0.0887 0.338
dr2_rv_template_logg 1804499940 -0.5 5 3.47 0.672
dr2_rv_template_teff 1804499940 3.6e+03 6.75e+03 5.15e+03 712
ecl_lat 0 -90 90 -6.24 36.5
ecl_lon 0 5.22e-07 360 234 78
g_rp 260559960 -4.87 11.5 0.925 0.381
ipd_frac_multi_peak 0 0 100 1.49 6.8
ipd_frac_odd_win 0 0 100 3.94 13.2
ipd_gof_harmonic_amplitude 0 7.66e-07 1.44e+04 0.13 1.71
ipd_gof_harmonic_phase 0 1.65e-08 180 88.3 57.7
l 0 1.06e-07 360 184 136
matched_transits 0 5 328 35.3 19.8
matched_transits_removed 0 0 242 0.27 0.902
new_matched_transits 0 0 328 14.4 10.7
nu_eff_used_in_astrometry 1226293062 -0.117 4.57 1.45 0.083
parallax 343964953 -187 768 0.366 1.03
parallax_error 343964953 0.00719 5.8 0.464 0.42
parallax_over_error 343964953 -161 1.54e+04 3.63 17.5
parallax_pmdec_corr 343964953 -0.952 0.978 0.0394 0.216
parallax_pmra_corr 343964953 -0.951 0.939 -0.0709 0.215
parallax_pseudocolour_corr 929381662 -0.912 0.884 0.0193 0.154
phot_bp_mean_flux 269676299 1.01 1.5e+09 2.97e+03 3.72e+05
phot_bp_mean_flux_error 269676299 0 7.11e+07 17.6 8.85e+03
phot_bp_mean_flux_over_error 269676302 0.0534 9.42e+07 70.3 5.27e+03
phot_bp_mean_mag 269676299 2.4 25.3 19.9 1.65
phot_bp_n_blended_transits 269676299 0 263 4.71 11
phot_bp_n_contaminated_transits 269676299 0 211 0.0154 0.356
phot_bp_n_obs 0 0 268 24.7 20.3
phot_bp_rp_excess_factor 270939431 0.0389 1.74e+04 1.50 1.38
phot_g_mean_flux 5455339 12.4 3.82e+09 5.55e+03 7.6e+05
phot_g_mean_flux_error 5455339 0.274 6.12e+07 5.49 3.76e+03
phot_g_mean_flux_over_error 5455339 1.08 2.29e+04 521 844
phot_g_mean_mag 5455339 1.73 23 19.3 1.55
phot_g_n_obs 0 0 2.4e+03 289 166
phot_proc_mode 1602051 0 2 0.287 0.654
phot_rp_mean_flux 256711832 1.05 1.59e+09 5.13e+03 5.32e+05
phot_rp_mean_flux_error 256711832 0 8.96e+07 26.1 8.03e+03
phot_rp_mean_flux_over_error 256711835 0.0546 8.14e+07 127 4.92e+03
phot_rp_mean_mag 256711832 1.74 24.7 18.3 1.57
phot_rp_n_blended_transits 256711832 0 262 4.67 11
phot_rp_n_contaminated_transits 256711832 0 216 0.0146 0.371
phot_rp_n_obs 0 0 263 25.7 20.2
pm 343964953 0.000194 1.04e+04 6.53 6.21
pm_error 343964953 0.0035 3.41 0.486 0.468
pm_over_error 343964953 0.000275 4.25e+05 49.3 192
pmdec 343964953 -5.82e+03 1.04e+04 -3.12 5.75
pmdec_error 343964953 0.00529 3.44 0.449 0.429
pmdec_pseudocolour_corr 929381662 -0.882 0.88 -0.0457 0.152
pmra 343964953 -4.41e+03 6.77e+03 -2.56 5.64
pmra_error 343964953 0.00396 3.45 0.505 0.482
pmra_pmdec_corr 343964953 -0.997 0.997 0.105 0.273
pmra_pseudocolour_corr 929381662 -0.922 0.842 -0.0676 0.135
pseudocolour 929381662 -3.27 5.84 1.35 0.196
pseudocolour_error 929381662 0.00107 1.1 0.129 0.0818
ra 0 3.41e-07 360 229 77.8
ra_dec_corr 0 -1 1 0.162 0.369
ra_error 0 0.00354 100 1.66 4.94
ra_parallax_corr 343964953 -0.984 0.99 -0.0287 0.2
ra_pmdec_corr 343964953 -0.996 0.995 -0.0793 0.226
ra_pmra_corr 343964953 -0.993 0.993 -0.133 0.227
ra_pseudocolour_corr 929381662 -0.932 0.917 -0.053 0.14
random_index 0 0 1.81e+09 9.06e+08 5.23e+08
ref_epoch 0 2016 2016 2016 0
ruwe 343964953 0.192 116 1.1 0.608
scan_direction_mean_k1 32419826 -180 180 -60.1 92.7
scan_direction_mean_k2 32419826 -90 90 -7.56 42.1
scan_direction_mean_k3 32419826 -60 60 -7.04 34.3
scan_direction_mean_k4 32419826 -45 45 -0.992 31.9
scan_direction_strength_k1 32419826 8.86e-06 1 0.274 0.155
scan_direction_strength_k2 32419826 6.43e-06 1 0.376 0.22
scan_direction_strength_k3 32419826 3.22e-06 1 0.26 0.165
scan_direction_strength_k4 32419826 1.98e-05 1 0.449 0.258
solution_id 0 1.63e+18 1.63e+18 1.63e+18 0
source_id 0 4.29e+09 6.91e+18 4.35e+18 1.64e+18
visibility_periods_used 0 1 33 16.3 6.5