OmniSky v1
Collection
Crossmatched, normalized multimodal astronomy: 20.4M DESI DR1 objects x 24 catalogs, 822 GB. Start with mmu-norm-index. • 20 items • Updated
Datasets:
_healpix_29 int64 56,333B 3,456,927,485B | spectrum dict | flux_aper_b float32 0 0 ⌀ | flux_bb_aper_b float32 0 0 | flux_significance_b float32 4.05 277 | hard_hm float32 -1 1 ⌀ | hard_hs float32 -1 1 ⌀ | hard_ms float32 -1 1 ⌀ | var_index_b float32 0 10 | var_prob_b float32 0 1 | name large_stringlengths 21 21 | object_id large_stringlengths 2 6 | ra float64 0.12 360 | dec float64 -29.87 83.3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
300,000,442,496,247,000 | {
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1.6497999429702759,
1.8833999... | 0 | 0 | 5.333333 | 0.211118 | 0.09619 | -0.124922 | 0 | 0.119367 | 2CXO J185442.0+682258 | 114049 | 283.674797 | 68.383104 |
1,128,347,939,141,291,400 | {
"ene_center_bin": [
0.5182999968528748,
0.5328999757766724,
0.5475000143051147,
0.5620999932289124,
0.57669997215271,
0.5913000106811523,
0.60589998960495,
0.6204999685287476,
0.6351000070571899,
0.6497000455856323,
0.6642999649047852,
0.6789000034332275,
0.693500... | 0 | 0 | 25.954063 | 0.14366 | -0.191131 | -0.326046 | 0 | 0.044442 | 2CXO J182446.3+650924 | 112650 | 276.193133 | 65.156785 |
1,129,861,361,174,648,800 | {
"ene_center_bin": [
0.60589998960495,
0.7300000190734863,
0.795699954032898,
0.8687000274658203,
0.9490000009536743,
1.0365999937057495,
1.1096000671386719,
1.1607000827789307,
1.2118000984191895,
1.2629001140594482,
1.335900068283081,
1.4161999225616455,
1.489199... | 0 | 0 | 10.404347 | 0.136165 | -0.109931 | -0.242349 | 0 | 0.072599 | 2CXO J182136.6+683259 | 112307 | 275.403144 | 68.549735 |
1,129,861,361,174,648,800 | {
"ene_center_bin": [
0.6424000263214111,
0.7957000136375427,
0.8540999889373779,
0.9052000045776367,
0.9343999624252319,
0.9636000394821167,
1.0074000358581543,
1.080399990081787,
1.1606999635696411,
1.219099998474121,
1.2702000141143799,
1.3140000104904175,
1.3359... | 0 | 0 | 12.508248 | 0.058713 | -0.008745 | -0.068707 | 0 | 0.088359 | 2CXO J182136.6+683259 | 112308 | 275.403144 | 68.549735 |
1,129,866,995,121,441,300 | {
"ene_center_bin": [
0.6789000034332275,
0.8978999853134155,
1.0074000358581543,
1.0876998901367188,
1.15339994430542,
1.219099998474121,
1.2848000526428223,
1.3431999683380127,
1.3724000453948975,
1.4235000610351562,
1.4818999767303467,
1.5476000308990479,
1.62790... | 0 | 0 | 10.74135 | 0.061212 | 0.124922 | 0.06371 | 0 | 0.204731 | 2CXO J182111.7+683126 | 112252 | 275.299207 | 68.524098 |
1,129,866,995,121,441,300 | {
"ene_center_bin": [
0.7445999979972839,
1.000100016593933,
1.0439000129699707,
1.080399990081787,
1.1241999864578247,
1.175299882888794,
1.2263998985290527,
1.2628999948501587,
1.292099952697754,
1.335900068283081,
1.3870000839233398,
1.4381000995635986,
1.4746000... | 0 | 0 | 12.001731 | 0.021237 | 0.167395 | 0.144909 | 0 | 0.079562 | 2CXO J182111.7+683126 | 112253 | 275.299207 | 68.524098 |
End of preview. Expand in Data Studio
Chandra X-ray spectra — L1 (release v1)
This L1 repository contains 11,420 sources matched across the release in one shard.
Schema
spectrum struct: ene_low_bin/ene_center_bin/ene_high_bin (keV), net_count_rate_density, net_count_rate_density_error. Variable-length (6–512 bins), 0.5–8 keV, grouped ≥5 counts. Catalog columns (flux_aper_b, hardness ratios, variability) are CSC values, unchanged.
Spectral values
net_count_rate_density contains background-subtracted count-rate density in counts s⁻¹ keV⁻¹. The upstream field name was flux; this repository uses a name that matches the quantity. Negative bins are kept because they are valid measurements.
Data notes
- Source and background PHA files, exposure, BACKSCAL, ARF, and RMF are not included. Use these spectra for spectral-shape modeling. Forward-folded fitting and physical-flux reconstruction require the missing files.
kshitijd/mmu-l2-chandra provides the L2 version with 512 bins and a validity mask. Credit: Chandra Source Catalog. Sourced via Multimodal Universe.
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