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gaia data release 3 documentation

17.1 Catalogue statistics

17.1.1 gaia_source table

The data fields of gaia_source, the main table of the Gaia Catalogue, are described in Section 20.1.1. Statistics are provided in Table 17.1 and a selection of plots in Section 17.2.

Table 17.1: gaia_source. Statistics for numeric catalogue fields for the 1 811 709 771 sources. Suffixes _al (resp. _ac) refer to Gaia along-scan (resp. across-scan) measurements.
Field name Null values Minimum Maximum Mean Std. dev.
ag_gspphot 1340950508 0 7.41 0.605 0.958
ag_gspphot_lower 1340950508 0 7.41 0.571 0.949
ag_gspphot_upper 1340950508 0.0001 7.41 0.65 0.963
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_primary_flag 0 0 1 0.0079 0.0885
astrometric_sigma5d_max 0 0.00994 2.63e+10 1.07e+04 1.76e+06
azero_gspphot 1340950508 0 10 0.829 1.38
azero_gspphot_lower 1340950508 0 10 0.786 1.37
azero_gspphot_upper 1340950508 0.0001 10 0.887 1.39
b 0 -90 90 -1.28 15.6
bp_g 269681608 -8.43 7.02 0.69 0.491
bp_rp 270939282 -7.35 10.2 1.61 0.625
classprob_dsc_combmod_galaxy 220949302 0 1 0.00234 0.0461
classprob_dsc_combmod_quasar 220949302 0 1 0.00364 0.0542
classprob_dsc_combmod_star 220949302 0 1 0.993 0.0769
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
distance_gspphot 1340950508 1.3 3.62e+04 1.43e+03 1.16e+03
distance_gspphot_lower 1340950508 1.3 3.57e+04 1.35e+03 1.13e+03
distance_gspphot_upper 1340950508 1.3 3.63e+04 1.53e+03 1.2e+03
duplicated_source 0 0 1 0.00773 0.0876
ebpminrp_gspphot 1340950508 0 4.23 0.334 0.537
ebpminrp_gspphot_lower 1340950508 0 4.22 0.315 0.532
ebpminrp_gspphot_upper 1340950508 0.0001 4.23 0.358 0.54
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 0.922 0.377
grvs_mag 1779477584 2.76 14.1 12.7 1.15
grvs_mag_error 1779477584 0.004 2.01 0.0742 0.0671
grvs_mag_nb_transits 1779477584 2 219 14.2 8.13
has_epoch_photometry 0 0 1 0.00649 0.0803
has_epoch_rv 0 0 1 1.05e-06 0.00102
has_mcmc_gspphot 0 0 1 0.248 0.432
has_mcmc_msc 0 0 1 0.192 0.394
has_rvs 0 0 1 0.000552 0.0235
has_xp_continuous 0 0 1 0.121 0.326
has_xp_sampled 0 0 1 0.019 0.137
in_andromeda_survey 0 0 1 0.000694 0.0263
in_galaxy_candidates 0 0 1 0.00267 0.0516
in_qso_candidates 0 0 1 0.00367 0.0605
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
logg_gspphot 1340950508 -0.5 5.5 4.52 0.514
logg_gspphot_lower 1340950508 -0.5 5.49 4.47 0.515
logg_gspphot_upper 1340950508 -0.5 5.5 4.56 0.51
matched_transits 0 5 328 35.3 19.8
matched_transits_removed 0 0 242 0.27 0.902
mh_gspphot 1340950508 -4.15 0.8 -1.17 0.877
mh_gspphot_lower 1340950508 -4.15 0.8 -1.3 0.947
mh_gspphot_upper 1340950508 -4.15 0.8 -1.01 0.804
new_matched_transits 0 0 328 14.4 10.7
non_single_star 0 0 7 0.000779 0.0424
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 0.039 1.71e+04 1.5 1.37
phot_g_mean_flux 5455339 12.4 3.82e+09 5.55e+03 7.6e+05
phot_g_mean_flux_error 5455339 0.275 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
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
radial_velocity 1777897588 -907 915 -3.3 53.6
radial_velocity_error 1777897588 0.113 40 3.96 3.32
random_index 0 0 1.81e+09 9.06e+08 5.23e+08
ref_epoch 0 2.02e+03 2.02e+03 2.02e+03 0
ruwe 343964953 0.192 116 1.1 0.608
rv_amplitude_robust 1804728523 0.00206 1.29e+03 16.6 31.3
rv_atm_param_origin 1777897588 0 555 134 110
rv_chisq_pvalue 1804728523 0 1 0.359 0.339
rv_expected_sig_to_noise 1777897588 2 2.87e+03 16.9 36.4
rv_method_used 1777897588 1 2 1.79 0.405
rv_nb_deblended_transits 1777897588 0 152 5.32 3.94
rv_nb_transits 1777897588 2 227 18.7 8.93
rv_renormalised_gof 1804716766 -9.41 810 2.96 9.55
rv_template_fe_h 1777897588 -5 1 -0.451 0.523
rv_template_logg 1777897588 -0.5 5 2.66 1.45
rv_template_teff 1777897588 3.1e+03 1.45e+04 5.09e+03 835
rv_time_duration 1777897588 0.074 1.04e+03 868 130
rv_visibility_periods_used 1777897588 1 33 12.6 4.62
rvs_spec_sig_to_noise 1810710126 15 2.01e+03 53.5 58
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 1.64e+18 1.64e+18 1.64e+18 0
source_id 0 4.3e+09 6.92e+18 4.35e+18 1.64e+18
teff_gspphot 1340950508 2.5e+03 4.15e+04 4.87e+03 1.05e+03
teff_gspphot_lower 1340950508 2.5e+03 4.15e+04 4.83e+03 1.04e+03
teff_gspphot_upper 1340950508 2.5e+03 4.15e+04 4.93e+03 1.06e+03
vbroad 1808185094 5 498 20.5 35.4
vbroad_error 1808185094 0.0642 304 10 17.1
vbroad_nb_transits 1808185094 6 91 13.4 6.57
visibility_periods_used 0 1 33 16.3 6.5