S240915b S240915b
Event ID: GW240915_001357 Trigger ID: S240915b cbc-workflow-er16-o4b
Current version: 327b059a
recorded 2026-07-28 13:42 UTC
v3
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Viewing version b2c9e604 (historical) — not the current record
Selected version b2c9e604. Compared with previous version 024ff87d.
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Changes from previous version 024ff87d to selected version b2c9e604
Change legend: Added exists only in the selected version; Removed exists only in the baseline; Changed has different values.
90 field changes.
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Changed
GraceDB › Events › 0 › CatalogVersion
- Baseline
1- Selected
2
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GraceDB › Events › 0 › FAR
- Baseline
0.000000000000000000000000000000005629493077204949- Selected
0.0000000000666987
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GraceDB › Events › 0 › GPSTime
- Baseline
1410394455.71882- Selected
1410394455.7188
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GraceDB › Events › 0 › H1SNR
- Baseline
10.172716- Selected
129.2271
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GraceDB › Events › 0 › HasMassGap
- Baseline
0.08214592049074806- Selected
- Missing
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GraceDB › Events › 0 › HasNS
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0.00009737809681257277- Selected
- Missing
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GraceDB › Events › 0 › HasRemnant
- Baseline
0.0- Selected
- Missing
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GraceDB › Events › 0 › L1SNR
- Baseline
12.427689- Selected
133.0247
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GraceDB › Events › 0 › Mass1
- Baseline
25.801163- Selected
- Missing
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GraceDB › Events › 0 › Mass2
- Baseline
5.1621695- Selected
- Missing
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GraceDB › Events › 0 › NetworkSNR
- Baseline
16.42734219903542- Selected
16.194190316283184
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GraceDB › Events › 0 › Pastro
- Baseline
0.9999999999999999- Selected
0.9996807478820279
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GraceDB › Events › 0 › Pbbh
- Baseline
0.9994404291651678- Selected
0.9996807478820279
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GraceDB › Events › 0 › Pbns
- Baseline
0.0000000000000000000000000000000000000000000000000000000004532735499587891- Selected
0.0
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GraceDB › Events › 0 › Pipeline
- Baseline
gstlal- Selected
CWB
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GraceDB › Events › 0 › Pnsbh
- Baseline
0.0005595708348320944- Selected
0.0
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GraceDB › Events › 0 › Skymap
- Baseline
https://gracedb.ligo.org/api/events/G511903/files/bayestar.multiorder.fits- Selected
https://gracedb.ligo.org/api/events/G511911/files/cwb.multiorder.fits
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GraceDB › Events › 0 › SourceClassification
- Baseline
https://gracedb.ligo.org/api/events/G511903/files/gstlal.p_astro.json- Selected
https://gracedb.ligo.org/api/events/G511911/files/cwb.p_astro.json
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GraceDB › Events › 0 › Spin1z
- Baseline
0.44859374- Selected
- Missing
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GraceDB › Events › 0 › Spin2z
- Baseline
0.44859374- Selected
- Missing
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GraceDB › Events › 0 › UID
- Baseline
G511903- Selected
G511911
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GraceDB › Events › 0 › V1SNR
- Baseline
3.4534004- Selected
- Missing
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GraceDB › Events › 0 › XML
- Baseline
https://gracedb.ligo.org/api/events/G511903/files/coinc.xml- Selected
- Missing
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GraceDB › Events › 1 › CatalogVersion
- Baseline
1- Selected
2
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GraceDB › Events › 1 › FAR
- Baseline
0.00000001943483063371332- Selected
0.0000000003167545842243851
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GraceDB › Events › 1 › GPSTime
- Baseline
1410394455.71875- Selected
1410394455.714844
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GraceDB › Events › 1 › H1SNR
- Baseline
10.222404- Selected
10.303054
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GraceDB › Events › 1 › HasMassGap
- Baseline
0.0753398033771258- Selected
0.1322807065285652
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GraceDB › Events › 1 › L1SNR
- Baseline
10.953836- Selected
12.804358
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GraceDB › Events › 1 › Mass1
- Baseline
16.128532- Selected
18.311173
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GraceDB › Events › 1 › Mass2
- Baseline
7.4838176- Selected
6.7444143
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GraceDB › Events › 1 › NetworkSNR
- Baseline
15.31616294734422- Selected
16.81716022234804
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Changed
GraceDB › Events › 1 › Pastro
- Baseline
0.9046239854239541- Selected
0.9984724439691216
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GraceDB › Events › 1 › Pbbh
- Baseline
0.9046239854239541- Selected
0.8589937380059585
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GraceDB › Events › 1 › Pipeline
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spiir- Selected
pycbc
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GraceDB › Events › 1 › Pnsbh
- Baseline
0.0- Selected
0.13947870596316314
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GraceDB › Events › 1 › Skymap
- Baseline
https://gracedb.ligo.org/api/events/G511904/files/bayestar.multiorder.fits- Selected
https://gracedb.ligo.org/api/events/G511909/files/bayestar.multiorder.fits
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GraceDB › Events › 1 › SourceClassification
- Baseline
https://gracedb.ligo.org/api/events/G511904/files/spiir.p_astro.json- Selected
https://gracedb.ligo.org/api/events/G511909/files/pycbc.p_astro.json
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GraceDB › Events › 1 › Spin1z
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-0.071449444- Selected
0.13498845
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GraceDB › Events › 1 › Spin2z
- Baseline
0.97773671- Selected
0.8838699
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GraceDB › Events › 1 › State
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neighbor- Selected
preferred
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GraceDB › Events › 1 › UID
- Baseline
G511904- Selected
G511909
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GraceDB › Events › 1 › V1SNR
- Baseline
3.1781695- Selected
3.5654435
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Changed
GraceDB › Events › 1 › XML
- Baseline
https://gracedb.ligo.org/api/events/G511904/files/coinc.xml- Selected
https://gracedb.ligo.org/api/events/G511909/files/coinc.xml
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GraceDB › Events › 2 › CatalogVersion
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1- Selected
2
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GraceDB › Events › 3 › CatalogVersion
- Baseline
1- Selected
2
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GraceDB › Events › 3 › FAR
- Baseline
0.0000000003167545842243851- Selected
0.00000001943483063371332
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GraceDB › Events › 3 › GPSTime
- Baseline
1410394455.714844- Selected
1410394455.71875
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GraceDB › Events › 3 › H1SNR
- Baseline
10.303054- Selected
10.222404
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GraceDB › Events › 3 › HasMassGap
- Baseline
0.1322807065285652- Selected
0.0753398033771258
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GraceDB › Events › 3 › L1SNR
- Baseline
12.804358- Selected
10.953836
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GraceDB › Events › 3 › Mass1
- Baseline
18.311173- Selected
16.128532
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Changed
GraceDB › Events › 3 › Mass2
- Baseline
6.7444143- Selected
7.4838176
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GraceDB › Events › 3 › NetworkSNR
- Baseline
16.81716022234804- Selected
15.31616294734422
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GraceDB › Events › 3 › Pastro
- Baseline
0.9984724439691216- Selected
0.9046239854239541
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GraceDB › Events › 3 › Pbbh
- Baseline
0.8589937380059585- Selected
0.9046239854239541
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GraceDB › Events › 3 › Pipeline
- Baseline
pycbc- Selected
spiir
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Changed
GraceDB › Events › 3 › Pnsbh
- Baseline
0.13947870596316314- Selected
0.0
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Changed
GraceDB › Events › 3 › Skymap
- Baseline
https://gracedb.ligo.org/api/events/G511909/files/bayestar.multiorder.fits- Selected
https://gracedb.ligo.org/api/events/G511904/files/bayestar.multiorder.fits
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Changed
GraceDB › Events › 3 › SourceClassification
- Baseline
https://gracedb.ligo.org/api/events/G511909/files/pycbc.p_astro.json- Selected
https://gracedb.ligo.org/api/events/G511904/files/spiir.p_astro.json
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GraceDB › Events › 3 › Spin1z
- Baseline
0.13498845- Selected
-0.071449444
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Changed
GraceDB › Events › 3 › Spin2z
- Baseline
0.8838699- Selected
0.97773671
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GraceDB › Events › 3 › State
- Baseline
preferred- Selected
neighbor
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GraceDB › Events › 3 › UID
- Baseline
G511909- Selected
G511904
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GraceDB › Events › 3 › V1SNR
- Baseline
3.5654435- Selected
3.1781695
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GraceDB › Events › 3 › XML
- Baseline
https://gracedb.ligo.org/api/events/G511909/files/coinc.xml- Selected
https://gracedb.ligo.org/api/events/G511904/files/coinc.xml
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GraceDB › Events › 4 › CatalogVersion
- Baseline
1- Selected
2
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GraceDB › Events › 4 › FAR
- Baseline
0.0000000000666987- Selected
0.000000000000000000000000000003599888893759188
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GraceDB › Events › 4 › GPSTime
- Baseline
1410394455.7188- Selected
1410394455.721061
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GraceDB › Events › 4 › H1SNR
- Baseline
129.2271- Selected
8.8014555
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Added
GraceDB › Events › 4 › HasMassGap
- Baseline
- Missing
- Selected
0.013619568521729256
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GraceDB › Events › 4 › HasNS
- Baseline
- Missing
- Selected
0.0
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GraceDB › Events › 4 › HasRemnant
- Baseline
- Missing
- Selected
0.0
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GraceDB › Events › 4 › L1SNR
- Baseline
133.0247- Selected
11.716464
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Added
GraceDB › Events › 4 › Mass1
- Baseline
- Missing
- Selected
14.372345
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GraceDB › Events › 4 › Mass2
- Baseline
- Missing
- Selected
8.7039757
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Changed
GraceDB › Events › 4 › NetworkSNR
- Baseline
16.194190316283184- Selected
14.95986315649805
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GraceDB › Events › 4 › Pastro
- Baseline
0.9996807478820279- Selected
- Missing
-
Removed
GraceDB › Events › 4 › Pbbh
- Baseline
0.9996807478820279- Selected
- Missing
-
Removed
GraceDB › Events › 4 › Pbns
- Baseline
0.0- Selected
- Missing
-
Changed
GraceDB › Events › 4 › Pipeline
- Baseline
CWB- Selected
gstlal
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Removed
GraceDB › Events › 4 › Pnsbh
- Baseline
0.0- Selected
- Missing
-
Changed
GraceDB › Events › 4 › SearchType
- Baseline
low latency- Selected
offline
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Removed
GraceDB › Events › 4 › Skymap
- Baseline
https://gracedb.ligo.org/api/events/G511911/files/cwb.multiorder.fits- Selected
- Missing
-
Removed
GraceDB › Events › 4 › SourceClassification
- Baseline
https://gracedb.ligo.org/api/events/G511911/files/cwb.p_astro.json- Selected
- Missing
-
Added
GraceDB › Events › 4 › Spin1z
- Baseline
- Missing
- Selected
0.34031251
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Added
GraceDB › Events › 4 › Spin2z
- Baseline
- Missing
- Selected
0.34031251
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Changed
GraceDB › Events › 4 › UID
- Baseline
G511911- Selected
G602607
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Added
GraceDB › Events › 4 › XML
- Baseline
- Missing
- Selected
https://gracedb.ligo.org/api/events/G602607/files/coinc.xml
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Changed
GraceDB › LastUpdate
- Baseline
2025-06-05 00:46:08.858071- Selected
2025-09-25 12:30:14.044031
View raw JSON diff
Technical inspection aid only. The semantic summary above remains authoritative.
Baseline 024ff87d
{"Info": {"Notes": [], "Labels": [], "SchemaVersion": "v3"}, "Sname": "S240915b", "GraceDB": {"ADVOK": true, "Events": [{"FAR": 5.629493077204949e-33, "UID": "G511903", "XML": "https://gracedb.ligo.org/api/events/G511903/files/coinc.xml", "Pbbh": 0.9994404291651678, "Pbns": 4.532735499587891e-58, "H1SNR": 10.172716, "HasNS": 9.737809681257277e-05, "L1SNR": 12.427689, "Mass1": 25.801163, "Mass2": 5.1621695, "Notes": [], "Pnsbh": 0.0005595708348320944, "State": "neighbor", "V1SNR": 3.4534004, "Pastro": 0.9999999999999999, "Skymap": "https://gracedb.ligo.org/api/events/G511903/files/bayestar.multiorder.fits", "Spin1z": 0.44859374, "Spin2z": 0.44859374, "GPSTime": 1410394455.71882, "Pipeline": "gstlal", "HasMassGap": 0.08214592049074806, "HasRemnant": 0.0, "NetworkSNR": 16.42734219903542, "SearchType": "low latency", "EarlyWarning": false, "CatalogNumber": "5", "CatalogVersion": 1, "InOfflineCatalog": true, "SourceClassification": "https://gracedb.ligo.org/api/events/G511903/files/gstlal.p_astro.json"}, {"FAR": 1.943483063371332e-08, "UID": "G511904", "XML": "https://gracedb.ligo.org/api/events/G511904/files/coinc.xml", "Pbbh": 0.9046239854239541, "Pbns": 0.0, "H1SNR": 10.222404, "HasNS": 0.0, "L1SNR": 10.953836, "Mass1": 16.128532, "Mass2": 7.4838176, "Notes": [], "Pnsbh": 0.0, "State": "neighbor", "V1SNR": 3.1781695, "Pastro": 0.9046239854239541, "Skymap": "https://gracedb.ligo.org/api/events/G511904/files/bayestar.multiorder.fits", "Spin1z": -0.071449444, "Spin2z": 0.97773671, "GPSTime": 1410394455.71875, "Pipeline": "spiir", "HasMassGap": 0.0753398033771258, "HasRemnant": 0.0, "NetworkSNR": 15.31616294734422, "SearchType": "low latency", "EarlyWarning": false, "CatalogNumber": "5", "CatalogVersion": 1, "InOfflineCatalog": true, "SourceClassification": "https://gracedb.ligo.org/api/events/G511904/files/spiir.p_astro.json"}, {"FAR": 4.003769e-20, "UID": "G511908", "XML": "https://gracedb.ligo.org/api/events/G511908/files/coinc.xml", "Pbbh": 1.0, "Pbns": 0.0, "H1SNR": 10.335891, "HasNS": 0.0, "L1SNR": 12.301045, "Mass1": 13.898092, "Mass2": 8.666162, "Notes": [], "Pnsbh": 0.0, "State": "neighbor", "V1SNR": 3.482905, "Pastro": 1.0, "Skymap": "https://gracedb.ligo.org/api/events/G511908/files/bayestar.multiorder.fits", "Spin1z": 0.204427, "Spin2z": 0.204427, "GPSTime": 1410394455.713566, "Pipeline": "MBTA", "HasMassGap": 0.023018130966662834, "HasRemnant": 0.0, "NetworkSNR": 16.440103, "SearchType": "low latency", "EarlyWarning": false, "CatalogNumber": "5", "CatalogVersion": 1, "InOfflineCatalog": true, "SourceClassification": "https://gracedb.ligo.org/api/events/G511908/files/mbta.p_astro.json"}, {"FAR": 3.167545842243851e-10, "UID": "G511909", "XML": "https://gracedb.ligo.org/api/events/G511909/files/coinc.xml", "Pbbh": 0.8589937380059585, "Pbns": 0.0, "H1SNR": 10.303054, "HasNS": 0.0, "L1SNR": 12.804358, "Mass1": 18.311173, "Mass2": 6.7444143, "Notes": [], "Pnsbh": 0.13947870596316314, "State": "preferred", "V1SNR": 3.5654435, "Pastro": 0.9984724439691216, "Skymap": "https://gracedb.ligo.org/api/events/G511909/files/bayestar.multiorder.fits", "Spin1z": 0.13498845, "Spin2z": 0.8838699, "GPSTime": 1410394455.714844, "Pipeline": "pycbc", "HasMassGap": 0.1322807065285652, "HasRemnant": 0.0, "NetworkSNR": 16.81716022234804, "SearchType": "low latency", "EarlyWarning": false, "CatalogNumber": "5", "CatalogVersion": 1, "InOfflineCatalog": true, "SourceClassification": "https://gracedb.ligo.org/api/events/G511909/files/pycbc.p_astro.json"}, {"FAR": 6.66987e-11, "UID": "G511911", "Pbbh": 0.9996807478820279, "Pbns": 0.0, "H1SNR": 129.2271, "L1SNR": 133.0247, "Notes": [], "Pnsbh": 0.0, "State": "neighbor", "Pastro": 0.9996807478820279, "Skymap": "https://gracedb.ligo.org/api/events/G511911/files/cwb.multiorder.fits", "GPSTime": 1410394455.7188, "Pipeline": "CWB", "NetworkSNR": 16.194190316283184, "SearchType": "low latency", "EarlyWarning": false, "CatalogNumber": "5", "CatalogVersion": 1, "InOfflineCatalog": true, "SourceClassification": "https://gracedb.ligo.org/api/events/G511911/files/cwb.p_astro.json"}], "LastUpdate": "2025-06-05 00:46:08.858071", "Instruments": "H1,L1,V1", "SupereventFAR": 5.629493077204949e-33, "SupereventPastro": 1.0}, "Lensing": {"SingletAnalyses": {}, "MultipletAnalyses": {}}, "Cosmology": {"Notes": [], "Counterparts": [], "PreferredLowLatencySkymap": "https://gracedb.ligo.org/api/events/G511909/files/bayestar.multiorder.fits", "CosmologyRunsUsingThisSuperevent": []}, "TestingGR": {"Notes": [], "BHMAnalyses": [], "FTIAnalyses": [], "MDRAnalyses": [], "POLAnalyses": [], "SIMAnalyses": [], "SMAAnalyses": [], "SSBAnalyses": [], "LOSAAnalyses": [], "IMRCTAnalyses": [], "TIGERAnalyses": [], "PCATGRAnalyses": [], "PYRINGAnalyses": [], "PSEOBRDAnalyses": [], "EchoesCWBAnalyses": [], "ResidualsAnalyses": [], "ModeledEchoesAnalyses": [], "UnmodeledEchoesAnalyses": [], "QNMRationalFilterAnalyses": []}, "Publications": {"Papers": []}, "ExtremeMatter": {"Analyses": []}, "CatalogTracking": {"Notes": [], "SearchResultStatuses": [{"UID": "gstlal", "Chunk": 0, "Notes": [], "Finalized": false, "ReviewStatus": "unstarted"}, {"UID": "MBTA", "Chunk": 0, "Notes": [], "Finalized": false, "ReviewStatus": "unstarted"}, {"UID": "pycbc", "Chunk": 0, "Notes": [], "Finalized": false, "ReviewStatus": "unstarted"}, {"UID": "CWB", "Chunk": 0, "Notes": [], "Finalized": false, "ReviewStatus": "unstarted"}], "ParameterEstimationStatuses": [{"UID": "IMRPhenomXPHM", "Notes": ["No production results satisfying request available, using best rota analysis instead"], "Finalized": false, "ReviewStatus": "pass", "CorrespondingPEUID": "Exp0", "IsDesignatedIllustrativeResult": true}]}, "ParameterEstimation": {"Notes": ["No posterior support for NSBH origin", "HLV event with very good localization", "Low-mass BBH with positive chi_eff", "Preferred pipeline pycbc gave p_NSBH around 0.14, so it is HIGH_PROFILE"], "Status": "ongoing", "Results": [{"UID": "online", "Notes": ["Automatic online PE run succeeded", "When this file is updated add the contents as a comment on the relevant git issue.", "Perform a review of the online result and assess if it is sufficent for sending a skymap.", "Instructions can be found [here](https://git.ligo.org/pe/O4/o4b-rota/-/wikis/Review-instructions).", "Results copied from /home/pe.o4/O4b/S240915b/online/bilby", "Low-mass BBH, with very good localization", "The issue was resolved initially with a blank sky volume plot, later fixed by Deep Chatterjee", "The online run looked good and was used to update the skymap and release the GCN updates", "The tight localization resulted in a failure of the sky volume plotting, which blocked the release of the GCN alert update"], "RunStatus": "complete", "ConfigFile": {"Path": "CIT:/home/pe.o4/public_html/O4b/S240915b/online/bilby/G511909_config_complete.ini", "MD5Sum": "5b074dbb97ec649120585ab3734c0c9c", "DateLastModified": "2024/09/14 17:20:50"}, "Deprecated": false, "ResultFile": {"Path": "CIT:/home/pe.o4/public_html/O4b/S240915b/online/bilby/final_result/G511909_data0_1410394455-7197266_analysis_H1L1V1_merge_result.hdf5", "MD5Sum": "be3d3a4c460db22b0d220580f41acc92", "DateLastModified": "2024/09/14 18:29:18"}, "Publications": [], "ReviewStatus": "ongoing", "PESummaryPageURL": "https://ldas-jobs.ligo.caltech.edu/~pe.o4/O4b/S240915b/online/summary/home.html", "InferenceSoftware": "bilby", "PESummaryResultFile": {"Path": "CIT:/home/pe.o4/public_html/O4b/S240915b/online/summary/samples/posterior_samples.h5", "MD5Sum": "ffac62823e1494ffcfb4c6ae71e8265f", "DateLastModified": "2024/09/14 19:15:29"}, "WaveformApproximant": "IMRPhenomPv2"}, {"UID": "Exp0", "Notes": ["IMRXPHM run since online run was IMRPhenomPv2 given its mass", "Results largely similar to online run with a small amount more spin orientation information"], "RunStatus": "complete", "ConfigFile": {"Path": "CIT:/home/pe.o4/public_html/O4b/S240915b/Exp0/bilby/EXP0_config_complete.ini", "MD5Sum": "c46374c5a1730dd60753ba934903fdb2", "DateLastModified": "2024/09/17 09:57:05"}, "Deprecated": false, "ResultFile": {"Path": "CIT:/home/pe.o4/public_html/O4b/S240915b/Exp0/bilby/final_result/EXP0_data0_1410394455-7197266_analysis_H1L1V1_merge_result.hdf5", "MD5Sum": "9c2f36282bef445d4da3b531b68f9625", "DateLastModified": "2024/09/17 09:59:58"}, "Publications": [], "ReviewStatus": "pass", "PESummaryPageURL": "https://ldas-jobs.ligo.caltech.edu/~pe.o4/O4b/S240915b/Exp0/summary/home.html", "InferenceSoftware": "bilby", "PESummaryResultFile": {"Path": "CIT:/home/pe.o4/public_html/O4b/S240915b/Exp0/summary/samples/posterior_samples.h5", "MD5Sum": "6a42bf88dc217b088d10677bb003111a", "DateLastModified": "2024/09/18 03:24:15"}, "WaveformApproximant": "IMRPhenomXPHM"}], "Analysts": ["nicole.khusid"], "Reviewers": ["aaron.zimmerman", "colm.talbot"], "SafeSamplingRate": 4096.0, 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32.0, "RecommendedDetectors": [{"UID": "H1", "Notes": ["could be some noise in LLO around 400Hz, but I'm not convinced it's not to do with the signal. Come back to detchar if there are any issues."], "FrameType": "H1_HOFT_C00_AR", "RecommendedChannel": "H1:GDS-CALIB_STRAIN_CLEAN_AR", "GlitchMitigationStatus": "not required", "RecommendedMinimumFrequency": 20}, {"UID": "L1", "Notes": ["could be some noise in LLO around 400Hz, but I'm not convinced it's not to do with the signal. Come back to detchar if there are any issues."], "FrameType": "L1_HOFT_C00_AR", "RecommendedChannel": "L1:GDS-CALIB_STRAIN_CLEAN_AR", "GlitchMitigationStatus": "not required", "RecommendedMinimumFrequency": 20}, {"UID": "V1", "Notes": ["could be some noise in LLO around 400Hz, but I'm not convinced it's not to do with the signal. Come back to detchar if there are any issues."], "FrameType": "HoftAR1", "RecommendedChannel": "V1:Hrec_hoftRepro1AR_16384Hz", "GlitchMitigationStatus": "not required", "RecommendedMinimumFrequency": 20}], "ParticipatingDetectors": ["H1", "L1", "V1"]}}
Selected b2c9e604
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Come back to detchar if there are any issues."], "FrameType": "H1_HOFT_C00_AR", "RecommendedChannel": "H1:GDS-CALIB_STRAIN_CLEAN_AR", "GlitchMitigationStatus": "not required", "RecommendedMinimumFrequency": 20}, {"UID": "L1", "Notes": ["could be some noise in LLO around 400Hz, but I'm not convinced it's not to do with the signal. Come back to detchar if there are any issues."], "FrameType": "L1_HOFT_C00_AR", "RecommendedChannel": "L1:GDS-CALIB_STRAIN_CLEAN_AR", "GlitchMitigationStatus": "not required", "RecommendedMinimumFrequency": 20}, {"UID": "V1", "Notes": ["could be some noise in LLO around 400Hz, but I'm not convinced it's not to do with the signal. Come back to detchar if there are any issues."], "FrameType": "HoftAR1", "RecommendedChannel": "V1:Hrec_hoftRepro1AR_16384Hz", "GlitchMitigationStatus": "not required", "RecommendedMinimumFrequency": 20}], "ParticipatingDetectors": ["H1", "L1", "V1"]}}