{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:M6VXLAB7E7F2W2P3WE2NPOQMID","short_pith_number":"pith:M6VXLAB7","canonical_record":{"source":{"id":"1507.05647","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-07-20T20:45:00Z","cross_cats_sorted":[],"title_canon_sha256":"a0a8245002d082071f8985ce5d35d564180c82e0aab368ee74a5db50891053c2","abstract_canon_sha256":"ed76b7d5ab9c30a0fa86c0ad934d2be205dc16586759539ccf553d8ee707ee04"},"schema_version":"1.0"},"canonical_sha256":"67ab75803f27cbab69fbb134d7ba0c40ec62692687f10e3de21a335b65dcc2c7","source":{"kind":"arxiv","id":"1507.05647","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.05647","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"1507.05647v1","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.05647","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"M6VXLAB7E7F2","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"M6VXLAB7E7F2W2P3","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"M6VXLAB7","created_at":"2026-05-18T12:29:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:M6VXLAB7E7F2W2P3WE2NPOQMID","target":"record","payload":{"canonical_record":{"source":{"id":"1507.05647","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-07-20T20:45:00Z","cross_cats_sorted":[],"title_canon_sha256":"a0a8245002d082071f8985ce5d35d564180c82e0aab368ee74a5db50891053c2","abstract_canon_sha256":"ed76b7d5ab9c30a0fa86c0ad934d2be205dc16586759539ccf553d8ee707ee04"},"schema_version":"1.0"},"canonical_sha256":"67ab75803f27cbab69fbb134d7ba0c40ec62692687f10e3de21a335b65dcc2c7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:29.177351Z","signature_b64":"afFR4/8AypHSYv9TkMbfIHzX+cDHmiOUSKbHQkXToqDoIFHBmvug1MaS3kDnJX96wYssaC+LMMBD71tiBw0kCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67ab75803f27cbab69fbb134d7ba0c40ec62692687f10e3de21a335b65dcc2c7","last_reissued_at":"2026-05-18T01:01:29.176818Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:29.176818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.05647","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:01:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p1C4kzy4Ue7F+tjZvR1zw1iaVN/H/SMjdKndUq5XvhYnHXvVi+E49ZALOqGXkFZOMuToFD6OyRK3QfAoZAylDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T20:09:30.483056Z"},"content_sha256":"819edc4ce5c57c049c5eabd30d3da1c90f2fe28748479004e432b6fb52b01d01","schema_version":"1.0","event_id":"sha256:819edc4ce5c57c049c5eabd30d3da1c90f2fe28748479004e432b6fb52b01d01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:M6VXLAB7E7F2W2P3WE2NPOQMID","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mapping and simulating systematics due to spatially-varying observing conditions in DES Science Verification data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Amara, A. A. Plazas, A. Benoit-L\\'evy, A. Carnero Rosell, A. E. Evrard, A. Fausti Neto, A. H. Bauer, A. J. Ross, A. K. Romer, A. Palmese, A. Refregier, A. Roodman, A. R. Walker, B. Flaugher, B. Leistedt, B. Nord, B. Santiago, C. B. D'Andrea, C. Bonnett, C. Bruderer, C. Chang, C. E. Cunha, C. J. Miller, C. S\\'anchez, D. Brooks, D. Capozzi, D. Gruen, D. J. James, D. L. Burke, D. L. DePoy, D. Thomas, D. W. Gerdes, E. Bertin, E. Buckley-Geer, E. Gaztanaga, E. M. Huff, E. Rozo, E. Sanchez, E. S. Rykoff, E. Suchyta, F. B. Abdalla, F. Elsner, F. Sobreira, G. Gutierrez, G. M. Bernstein, G. Tarle, H. T. Diehl, H.V. Peiris, I. Sadeh, I. Sevilla-Noarbe, J. Carretero, J. Frieman, J. L. Marshall, J. Thaler, J. Zuntz, K. Honscheid, K. Kuehn, K. Reil, L. N. da Costa, M. A. G. Maia, M. Banerji, M. Carrasco Kind, M. Crocce, M. E. C. Swanson, M. Jarvis, M. Lima, M. March, M. R. Becker, M. Schubnell, M. Soares-Santos, M. T. Busha, N. Kuropatkin, O. Lahav, P. Doel, P. Fosalba, P. Martini, P. Melchior, R. A. Bernstein, R. A. Gruendl, R. C. Nichol, R. C. Smith, R. H. Wechsler, R. Miquel, R. Ogando, S. Allam, S. Desai, S. Kent, S. L. Bridle, T. F. Eifler, T. S. Li, V. Scarpine, V. Vikram, W.J. Percival, W. Wester, Y. Zhang","submitted_at":"2015-07-20T20:45:00Z","abstract_excerpt":"Spatially-varying depth and characteristics of observing conditions, such as seeing, airmass, or sky background, are major sources of systematic uncertainties in modern galaxy survey analyses, in particular in deep multi-epoch surveys. We present a framework to extract and project these sources of systematics onto the sky, and apply it to the Dark Energy Survey (DES) to map the observing conditions of the Science Verification (SV) data. The resulting distributions and maps of sources of systematics are used in several analyses of DES SV to perform detailed null tests with the data, and also to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.05647","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:01:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rfzJeqrqEGHf6LqUqoRM9VuAMRMqj5S4WSTVAzqHg4rOSvGAPGvzFeHEN0d3tOEazMNCPJHLDsT56mYhWsFnAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T20:09:30.483736Z"},"content_sha256":"72ef40b805da19c336622349129d0f31951e1fe4d25801e6a003cddf00f6f898","schema_version":"1.0","event_id":"sha256:72ef40b805da19c336622349129d0f31951e1fe4d25801e6a003cddf00f6f898"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M6VXLAB7E7F2W2P3WE2NPOQMID/bundle.json","state_url":"https://pith.science/pith/M6VXLAB7E7F2W2P3WE2NPOQMID/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M6VXLAB7E7F2W2P3WE2NPOQMID/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T20:09:30Z","links":{"resolver":"https://pith.science/pith/M6VXLAB7E7F2W2P3WE2NPOQMID","bundle":"https://pith.science/pith/M6VXLAB7E7F2W2P3WE2NPOQMID/bundle.json","state":"https://pith.science/pith/M6VXLAB7E7F2W2P3WE2NPOQMID/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M6VXLAB7E7F2W2P3WE2NPOQMID/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:M6VXLAB7E7F2W2P3WE2NPOQMID","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"ed76b7d5ab9c30a0fa86c0ad934d2be205dc16586759539ccf553d8ee707ee04","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-07-20T20:45:00Z","title_canon_sha256":"a0a8245002d082071f8985ce5d35d564180c82e0aab368ee74a5db50891053c2"},"schema_version":"1.0","source":{"id":"1507.05647","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.05647","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"1507.05647v1","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.05647","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"M6VXLAB7E7F2","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"M6VXLAB7E7F2W2P3","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"M6VXLAB7","created_at":"2026-05-18T12:29:32Z"}],"graph_snapshots":[{"event_id":"sha256:72ef40b805da19c336622349129d0f31951e1fe4d25801e6a003cddf00f6f898","target":"graph","created_at":"2026-05-18T01:01:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Spatially-varying depth and characteristics of observing conditions, such as seeing, airmass, or sky background, are major sources of systematic uncertainties in modern galaxy survey analyses, in particular in deep multi-epoch surveys. We present a framework to extract and project these sources of systematics onto the sky, and apply it to the Dark Energy Survey (DES) to map the observing conditions of the Science Verification (SV) data. The resulting distributions and maps of sources of systematics are used in several analyses of DES SV to perform detailed null tests with the data, and also to","authors_text":"A. Amara, A. A. Plazas, A. Benoit-L\\'evy, A. Carnero Rosell, A. E. Evrard, A. Fausti Neto, A. H. Bauer, A. J. Ross, A. K. Romer, A. Palmese, A. Refregier, A. Roodman, A. R. Walker, B. Flaugher, B. Leistedt, B. Nord, B. Santiago, C. B. D'Andrea, C. Bonnett, C. Bruderer, C. Chang, C. E. Cunha, C. J. Miller, C. S\\'anchez, D. Brooks, D. Capozzi, D. Gruen, D. J. James, D. L. Burke, D. L. DePoy, D. Thomas, D. W. Gerdes, E. Bertin, E. Buckley-Geer, E. Gaztanaga, E. M. Huff, E. Rozo, E. Sanchez, E. S. Rykoff, E. Suchyta, F. B. Abdalla, F. Elsner, F. Sobreira, G. Gutierrez, G. M. Bernstein, G. Tarle, H. T. Diehl, H.V. Peiris, I. Sadeh, I. Sevilla-Noarbe, J. Carretero, J. Frieman, J. L. Marshall, J. Thaler, J. Zuntz, K. Honscheid, K. Kuehn, K. Reil, L. N. da Costa, M. A. G. Maia, M. Banerji, M. Carrasco Kind, M. Crocce, M. E. C. Swanson, M. Jarvis, M. Lima, M. March, M. R. Becker, M. Schubnell, M. Soares-Santos, M. T. Busha, N. Kuropatkin, O. Lahav, P. Doel, P. Fosalba, P. Martini, P. Melchior, R. A. Bernstein, R. A. Gruendl, R. C. Nichol, R. C. Smith, R. H. Wechsler, R. Miquel, R. Ogando, S. Allam, S. Desai, S. Kent, S. L. Bridle, T. F. Eifler, T. S. Li, V. Scarpine, V. Vikram, W.J. Percival, W. Wester, Y. Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-07-20T20:45:00Z","title":"Mapping and simulating systematics due to spatially-varying observing conditions in DES Science Verification data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.05647","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:819edc4ce5c57c049c5eabd30d3da1c90f2fe28748479004e432b6fb52b01d01","target":"record","created_at":"2026-05-18T01:01:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"ed76b7d5ab9c30a0fa86c0ad934d2be205dc16586759539ccf553d8ee707ee04","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-07-20T20:45:00Z","title_canon_sha256":"a0a8245002d082071f8985ce5d35d564180c82e0aab368ee74a5db50891053c2"},"schema_version":"1.0","source":{"id":"1507.05647","kind":"arxiv","version":1}},"canonical_sha256":"67ab75803f27cbab69fbb134d7ba0c40ec62692687f10e3de21a335b65dcc2c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67ab75803f27cbab69fbb134d7ba0c40ec62692687f10e3de21a335b65dcc2c7","first_computed_at":"2026-05-18T01:01:29.176818Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:29.176818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"afFR4/8AypHSYv9TkMbfIHzX+cDHmiOUSKbHQkXToqDoIFHBmvug1MaS3kDnJX96wYssaC+LMMBD71tiBw0kCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:29.177351Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.05647","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:819edc4ce5c57c049c5eabd30d3da1c90f2fe28748479004e432b6fb52b01d01","sha256:72ef40b805da19c336622349129d0f31951e1fe4d25801e6a003cddf00f6f898"],"state_sha256":"f940dedcc8fc8eeeba07b689129e1b00c418b9b794239e9de80dd974b8c03918"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bjERWwExxavXwmDyky7pN1rzDIWiqwPDGjY5XplSZeYAIHXNeHn5vOpCh5b9peh5n2cgAQ6eZcW5LnY7djqCCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T20:09:30.487139Z","bundle_sha256":"27105e408058038696263c7ab32eeaf55b8c087f12481f44b3156ef1c2a715d7"}}