SeismicX-Cont / data /validation /waveform_quality_audit.json
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{
"waveform_index": "data/index/waveform_index.sqlite",
"index_audit": {
"scope": "all waveform_segments rows",
"segment_rows": 159916,
"missing_required_field_counts": {},
"invalid_sampling_rows": 0,
"end_time_formula_mismatch_rows": 0,
"duplicate_segment_key_rows_beyond_first": 0,
"exact_nslc_gap_count_within_selected_periods": 4429,
"exact_nslc_gap_count_by_network": {
"BK": 485,
"CI": 2250,
"NC": 1694
},
"exact_nslc_gap_count_by_channel_family": {
"AB": 1,
"AC": 4,
"AD": 4,
"AM": 1,
"AN": 1,
"AP": 2,
"AR": 1,
"AS": 4,
"AT": 1,
"AW": 1,
"BH": 192,
"EH": 76,
"EP": 201,
"HH": 195,
"HJ": 72,
"HN": 2096,
"HS": 144,
"HV": 5,
"LC": 287,
"LE": 124,
"LH": 202,
"LI": 39,
"LK": 39,
"LN": 339,
"LT": 1,
"LY": 3,
"VC": 91,
"VE": 87,
"VF": 29,
"VH": 69,
"VK": 29,
"VM": 89
},
"exact_nslc_gap_duration_s": {
"median": 36615.124999876025,
"p90": 259199.99999985695,
"p99": 345600.0000002289,
"maximum": 432000.0000002289
},
"exact_nslc_overlap_count_within_selected_periods": 0,
"exact_nslc_overlap_count_by_network": {},
"exact_nslc_overlap_count_by_channel_family": {},
"exact_nslc_overlap_duration_s": {
"median": null,
"p90": null,
"p99": null,
"maximum": null
},
"missing_coordinate_rows": 0
},
"hdf5_sample_audit": {
"scope": "deterministic SHA-256-ordered sample stratified by period, network, and HH/BH/EH/HN channel family",
"sample_per_stratum": 10,
"selected_segments": 200,
"sample_window_seconds": 30.0,
"counters": {
"constant_sample_windows": 3,
"datasets_opened": 200,
"sample_windows_read": 600
},
"metadata_mismatch_examples": [],
"sample_flag_examples": [
{
"dataset_path": "/2019-01-01T00:00:00.000000Z/2019-07-02T00:00:00.000000Z/stations/CI.CHR.--/waveform/HNZ/0",
"sample_start_index": 0,
"flag": "constant_window"
},
{
"dataset_path": "/2019-01-01T00:00:00.000000Z/2019-07-02T00:00:00.000000Z/stations/CI.CHR.--/waveform/HNZ/0",
"sample_start_index": 4318500,
"flag": "constant_window"
},
{
"dataset_path": "/2019-01-01T00:00:00.000000Z/2019-07-02T00:00:00.000000Z/stations/CI.CHR.--/waveform/HNZ/0",
"sample_start_index": 8637000,
"flag": "constant_window"
},
{
"dataset_path": "/2019-01-01T00:00:00.000000Z/2019-07-04T00:00:00.000000Z/stations/NC.C013.01/waveform/HNN/0",
"sample_start_index": 665936,
"flag": "nonfinite_values",
"count": 6000
},
{
"dataset_path": "/2021-01-01T00:00:00.000000Z/2021-11-14T00:00:00.000000Z/stations/BK.FARB.00/waveform/BHE/0",
"sample_start_index": 1727400,
"flag": "nonfinite_values",
"count": 1200
},
{
"dataset_path": "/2021-01-01T00:00:00.000000Z/2021-11-14T00:00:00.000000Z/stations/NC.MINS.--/waveform/HHN/0",
"sample_start_index": 4318500,
"flag": "nonfinite_values",
"count": 3000
},
{
"dataset_path": "/2021-01-01T00:00:00.000000Z/2021-11-14T00:00:00.000000Z/stations/NC.MINS.--/waveform/HHZ/0",
"sample_start_index": 4318500,
"flag": "nonfinite_values",
"count": 3000
}
],
"sample_values_examined": 1611000,
"zero_value_fraction": 0.006541278708876474,
"longest_zero_run_s_in_sample_windows": 30.0,
"dtype_extreme_value_count": 0,
"nonfinite_value_count": 13200,
"large_first_difference_count_20mad": 324,
"large_first_difference_note": "Diagnostic flag only; large first differences can be genuine seismic signals."
},
"interpretation": "Index checks cover every segment row. Sample-value diagnostics do not replace a full-array scan or comparison with upstream MiniSEED samples."
}