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CHIME/FRBPublic data

Catalog 2
Five years of FRBs.

The second CHIME/FRB catalog: positions, exposure, dispersion, fluence and burst morphology for every catalogued burst, including repeating sources and their sub-bursts.

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Catalog data4,539 bursts · 5,045 rows

How to use this table

Each row is one burst detected by CHIME. A burst made of several parts, called sub-bursts, has a row for each part.

  • Sort the table

    Click a column name to sort by it. Click it again to reverse the order. The arrow beside the name shows the current order.

  • Find out what a column means

    Point at or tap the information button beside a column name. Every column is also explained in the glossary.

  • See one burst in detail

    Click a burst name to open its own page, with all of its measurements and plots.

  • Search

    Type a burst name, such as FRB 20180725A, or the name of a repeating source, then press Search. To see every burst again, clear the box and press Search.

  • Repeat and one-off bursts

    Some sources have been seen to burst more than once. Use the buttons above the table to show only repeat bursts or only one-off bursts.

  • Choose which columns to show

    Click Columns, tick the ones you want, then press Apply. “Back to the default columns” restores the original set.

  • Move around

    Scroll sideways to see more columns; the burst name stays in place. Use the page numbers below the table to see more rows.

  • Dashes and limits

    A dash (—) means there is no value for that burst. A “<” before a number means the true value is below it.

  • Use the data yourself

    The table shows the published catalog. Download the full catalog to work with it in a spreadsheet or your own code.

Choose columns

Tick the columns you want in the table, then press Apply. The burst name is always shown.

Identification
Position
Detection and dispersion
Arrival time
Burst shape
Flux and spectrum
Exposure and fluence thresholds
Fit quality
Flags
Notes

Click a column name to sort. Click a burst name to see its details and plots.

Burst name
 
Repeater
 
RA
degrees
Dec
degrees
S/N
 
DM
pc cm⁻³
Boxcar width
s
Fluence
Jy ms
Fluence err.
Jy ms
FRB 20200122L—134.77654.43313.3400.04890.001971.160.50
FRB 20200122K—144.38249.80211.9630.80350.002952.200.78
FRB 20200123A—267.32234.41912.9573.18230.003933.061.58
FRB 20200124E—82.07280.65717.2649.60470.001970.390.19
FRB 20200124D—149.780-0.42926.22691.27190.029498.793.16
FRB 20200124C—324.96845.34714.3381.09710.01573——
FRB 20200125E—34.10713.64013.0351.71980.005901.590.80
FRB 20200125D—133.37519.35018.01266.57650.010812.821.31
FRB 20200125Csub 1—176.40950.20526.0445.05530.010812.050.72
FRB 20200125Csub 2—176.40950.20526.0445.05530.010812.050.72
FRB 20200125Csub 3—176.40950.20526.0445.05530.010812.050.72
FRB 20200125B—251.71453.23669.3512.42430.001978.172.80
FRB 20200126D—121.94814.74414.91045.12350.013765.902.90
FRB 20200126C—130.08326.09024.7343.40890.009833.341.27
FRB 20200126B—208.52061.90712.51576.59460.001972.170.52
FRB 20200126A—3.45946.48712.5569.89150.001971.080.49
FRB 20200127C—132.5029.89814.2150.09870.001971.780.91
FRB 20200127A—2.38444.16429.71983.16750.0147512.245.01
FRB 20200128B—60.76240.57788.8913.95580.001979.863.35
FRB 20200128C—156.94334.12215.3401.00740.0196611.0036.47
FRB 20200128A—357.09327.36040.2439.57580.003937.142.45
FRB 20200129B—182.17238.90317.01792.41860.008853.301.11
FRB 20200129A—335.08175.74226.0747.77510.001973.731.22
FRB 20200130B—81.28066.21717.6904.33660.001971.770.75
FRB 20200130A—247.94580.614184.7507.44650.0019726.028.93
FRB 20200131A—60.17924.45537.51359.24770.003933.901.36
FRB 20200131B—255.40074.98825.21272.55340.098303.030.52
FRB 20200201B—98.61467.06921.01208.92180.00688——
FRB 20200201A—280.19962.99111.8362.53670.001970.830.34
FRB 20200202B—298.34377.987194.4402.95060.0019724.858.88
FRB 20200203D—163.63141.25238.1180.00430.001971.950.67
FRB 20200203C—218.94649.01312.8265.07590.001972.341.01
FRB 20200203E—307.44679.71016.5555.89210.001972.140.80
FRB 20200203B—318.14148.78779.4744.17760.0088511.133.86
FRB 20200203H—13.23870.89411.81187.29550.001971.351.00
FRB 20200204A—21.63272.31513.6370.71990.000981.190.59
FRB 20200204I—104.16747.01553.1805.62070.0127813.854.72
FRB 20200204H—185.55983.1156.8301.86140.010811.150.42
FRB 20200204K—262.99682.10411.9411.31320.006882.730.97
FRB 20200204G—288.46773.67230.7456.36390.002953.741.26
FRB 20200204F—357.108-9.28229.8420.76620.0019715.376.47
FRB 20200205D—180.02544.38855.3881.18120.002954.641.91
FRB 20200205C—209.11042.41315.9688.81720.00197——
FRB 20200205B—254.26322.3889.8940.85820.007861.880.94
FRB 20200205A—321.10019.63912.8781.67420.025562.691.23
FRB 20200206B—195.53665.93417.9389.80730.006883.561.50
FRB 20200206A—343.56982.94467.2331.85050.0019710.444.56
FRB 20200207Asub 1—18.82785.747135.0506.83730.0009816.504.97
FRB 20200207Asub 2—18.82785.747135.0506.83730.0009816.504.97
FRB 20200208A—149.46816.49722.9514.76720.003932.350.92

901–950 of 3,763 rows

Downloads

Download Catalog 2

The complete catalog, with every burst and every column (version 20251231). Raw data and every other file of the release are archived at CANFAR, where the DOI points.

Catalog files

Raw data and full archive

CANFAR archiveRaw catalog files, permanently archived at the CADC.doi:10.11570/25.0066 Browse on CANFAR (opens in a new tab)

Citation

How to cite

This data is provided by the CHIME/FRB Collaboration. When using this data, please cite the paper listed here.

Tutorials

Working with the data

Query Catalog 2 from your own code, read its files, or find guides to plotting the data.

Glossary

What each field means

Every field in Catalog 2, grouped by topic, with its unit and a short description. The smaller grey names are the field names used in the downloaded files.

60 columns in 10 groups

Identification5

ColumnUnitDescription
Burst nametns_nameNo unitTransient Name Server name
Previous nameprevious_nameNo unitPrevious name, if applicable
Repeater namerepeater_nameNo unitAssociated repeater name, if applicable
Event IDevent_idNo unitCHIME/FRB internal event identifier
Sub-burst numbersub_numNo unitSub-burst number (0 for single-burst FRBs; otherwise, assigned in chronological order). The website numbers sub-bursts from 1.

Position6

ColumnUnitDescription
Right ascensionradegreesRight ascension in decimal degrees (J2000)
Right ascension uncertaintyra_errdegreesUncertainty in ra in degrees of arc
DeclinationdecdegreesDeclination in decimal degrees (J2000)
Declination uncertaintydec_errdegreesUncertainty in dec
Galactic longitudegldegreesGalactic longitude
Galactic latitudegbdegreesGalactic latitude

Detection and dispersion7

ColumnUnitDescription
Detection S/Nbonsai_snrNo unitDetection S/N
S/N (fitburst)snr_fitbNo unitS/N determined using fitting algorithm fitburst
Detection dispersion measurebonsai_dmpc cm⁻³Detection dispersion measure
Dispersion measure (fitburst)dm_fitbpc cm⁻³Dispersion measure determined using fitting algorithm fitburst
Dispersion measure (fitburst) uncertaintydm_fitb_errpc cm⁻³Uncertainty in dm_fitb
DM excess (NE2001)dm_exc_ne2001pc cm⁻³Dispersion measure excess between dm_fitb, or bonsai_dm if dm_fitb unavailable, and NE2001 assuming best-fit sky position of source
DM excess (YMW16)dm_exc_ymw16pc cm⁻³Dispersion measure excess between dm_fitb, or bonsai_dm if dm_fitb unavailable, and YMW16 assuming best-fit sky position of source

Arrival time4

ColumnUnitDescription
Arrival time, 400 MHzmjd_400MJDTime of arrival at topocentric CHIME location referenced to 400.1953125 MHz for specific sub-burst; MJD UTC
Arrival time, 400 MHz uncertaintymjd_400_errMJDUncertainty in mjd_400
Arrival time, infinite frequencymjd_infMJDTime of arrival at topocentric CHIME location referenced to infinite frequency for specific sub-burst; MJD UTC
Arrival time, infinite frequency uncertaintymjd_inf_errMJDUncertainty in mjd_inf

Burst shape5

ColumnUnitDescription
Boxcar widthbc_widthsBoxcar width of pulse
Width (fitburst)width_fitbsWidth of sub-burst using fitburst
Width (fitburst) uncertaintywidth_fitb_errsUncertainty in width_fitb
Scattering timescat_timesScattering time at 400.1953125 MHz
Scattering time uncertaintyscat_time_errsUncertainty in scat_time

Flux and spectrum11

ColumnUnitDescription
FluxfluxJyMaximum of band-averaged flux-density time series within burst window, lower limit
Flux uncertaintyflux_errJyUncertainty in flux
FluencefluenceJy msIntegral of band-averaged flux-density time series over burst window, lower limit
Fluence uncertaintyfluence_errJy msUncertainty in fluence
Peak frequencypeak_freqMHzFrequency of maximum of best-fit spectral model for sub-burst
Lowest frequencylow_freqMHzLowest frequency where best-fit spectral model for sub-burst exceeds 10% of maximum, clipped at band edge
Highest frequencyhigh_freqMHzHighest frequency where best-fit spectral model for sub-burst exceeds 10% of maximum, clipped at band edge
Spectral indexsp_idxNo unitSpectral index for sub-burst
Spectral index uncertaintysp_idx_errNo unitUncertainty in sp_idx
Spectral runningsp_runNo unitSpectral running for sub-burst
Spectral running uncertaintysp_run_errNo unitUncertainty in sp_run

Exposure and fluence thresholds8

ColumnUnitDescription
Exposure, upper transitexp_uphourExposure for upper transit of source
Exposure, upper transit uncertaintyexp_up_errhourUncertainty in exp_up
Exposure, lower transitexp_lowhourExposure for lower transit of source
Exposure, lower transit uncertaintyexp_low_errhourUncertainty in exp_low
Fluence threshold, lower transit (68%)low_ft_68Jy msFluence above which 68% of lower-transit bursts would have been detected, lower limit
Fluence threshold, upper transit (68%)up_ft_68Jy msFluence above which 68% of upper-transit bursts would have been detected, lower limit
Fluence threshold, lower transit (95%)low_ft_95Jy msFluence above which 95% of lower-transit bursts would have been detected, lower limit
Fluence threshold, upper transit (95%)up_ft_95Jy msFluence above which 95% of upper-transit bursts would have been detected, lower limit

Fit quality3

ColumnUnitDescription
Chi-squaredchi_sqNo unitchi-squared from fitburst
Degrees of freedomdofNo unitNumber of degrees of freedom in fitburst
Fraction of channels flaggedflag_fracNo unitFraction of spectral channels flagged in fitburst

Flags7

ColumnUnitDescription
Catalog 1 flagcatalog1_flagNo unitFlag indicating whether event was included in Catalog 1 (1 = included, 0 = not included)
Catalog 1 parameters flagcatalog1_param_flagNo unitFlag indicating whether fitburst and/or flux/fluence pipeline results are taken from Catalog 1 (1 = Catalog 1, 0 = Catalog 2)
Sidelobe flagsidelobe_flagNo unitFlag for events that were detected in sidelobes of CHIME primary beam (1 = sidelobe, 0 = mainlobe)
Excluded from inference flagexcluded_flagNo unitFlag for events that should be excluded from parameter inference due to non-nominal telescope operation (1 = excluded, 0 = included)
Intrachannel dispersion flagintrachan_flagNo unitFlag for events where intrachannel dispersion was not modeled during fit (1 = unmodeled, 0 = modeled)
Citizen science flagcitizen_science_flagNo unitFlag for low S/N events first identified by citizen scientists on Zooniverse platform (1 = citizen science detection, 0 = regular detection)
Extended burst window flagfluence_win_extendedNo unitFlag for events where burst window was extended during flux and fluence estimation (1 = window extended, 0 = window not extended)

Notes4

ColumnUnitDescription
Localization notesra_dec_notesNo unitNotes on source localization
Exposure notesexp_notesNo unitNotes on exposure estimates
Flux and fluence notesfluence_notesNo unitNotes on flux and fluence estimates
Fitburst notesnotes_fitbNo unitNotes or comments on fitburst results