Source List

Observation details report
Detailed source parameters (including errors) in a comma-separated values file

Click on source number for detailed analysis, including spectral fits if applicable

data idnum idradec telescope instrument x y cnts cntserr rate rateerr SNR poisprob sigmaj sigmin incang offax cnts_soft cnts_hard hr hr_err ext var N_H flux vign flags
Report srcpi bgdpi arf rmf 2 X184119.33-045610.9 chandra ccd7 782.19 593.675 3497.34 70.305 0.119514 0.00240252 237.762 1 0.832408 0.832408 0 1.35627 T F 1.57e+22 2.16054e-12 1 dsxf
Report srcpi bgdpi arf 1 X184119.71-045711.4 chandra ccd7 770.626 470.692 77.9906 22.6336 0.00266516 0.000773453 5.30209 1 1.48031 1.48031 0 0.996369 T F 1.57e+22 3.62657e-14 1 dscx
Report srcpi bgdpi arf 43 X184112.40-045638.6 chandra ccd7 992.836 537.317 71.4373 20.8133 0.00244121 0.000711249 4.85657 0.999998 0.928271 0.928271 0 0.980687 T F 1.57e+22 3.32978e-14 1 dsx
Report srcpi bgdpi arf rmf 1 X184001.16-045022.5 chandra ccd0 686.359 595.739 160.767 23.0447 0.00549386 0.000787501 119.662 1 11.3269 8.11942 65.4484 19.7779 F F 1.52e+22 1.37323e-13 1 dx
Report srcpi bgdpi arf rmf 9 X184117.16-045716.1 chandra ccd7 848.002 461.193 102.768 22.1399 0.00351185 0.00075658 6.98654 1 1.5 1.5 0 0.369196 T F 1.57e+22 4.77405e-14 1 dsx
Report srcpi bgdpi arf 16 X184120.93-045625.6 chandra ccd7 733.61 563.813 95.9529 21.9937 0.00327898 0.000751586 6.52323 1 1.5 1.5 0 1.51876 T F 1.57e+22 4.48263e-14 1 dsx
Report srcpi bgdpi arf 4 X184126.81-045542.7 chandra ccd7 554.915 651.056 63.6287 17.0024 0.00217437 0.00058102 4.32571 0.999981 0.880773 0.880773 0 3.13098 F F 1.56e+22 3.03566e-14 1 dsx
Report srcpi bgdpi arf 3 X184112.37-045622.4 chandra ccd7 993.538 570.222 37.28 20.5508 0.00127396 0.000702279 2.53443 0.993206 0.479948 0.479948 0 1.17157 F F 1.57e+22 1.83753e-14 1 dsx
Report srcpi bgdpi arf rmf 39 X184112.64-045618.6 chandra ccd7 985.558 578.092 100.34 22.6758 0.00342888 0.00077489 6.82148 1 1.5 1.5 0 1.16913 T F 1.57e+22 5.08325e-14 1 dsx
Report srcpi bgdpi arf 21 X184123.21-045547.7 chandra ccd7 664.503 640.867 42.5703 20.026 0.00145475 0.000684345 2.89408 0.997358 0.989452 0.989452 0 2.33002 F F 1.57e+22 2.08034e-14 1 dsbx
Report srcpi bgdpi arf rmf 11 X184112.99-045704.1 chandra ccd7 974.732 485.54 279.671 20.3643 0.00955713 0.000695904 19.0131 1 2.96512 2.96512 0 0.659014 T F 1.57e+22 1.30705e-13 1 dsx
Report srcpi bgdpi arf 25 X184123.09-045539.7 chandra ccd7 667.5 656.5 88.8506 12.4502 0.00303627 0.000425458 6.04039 1 0.492 0.492 90 2.39326 F F 1.57e+22 4.67609e-14 1 dx
Report srcpi bgdpi arf 26 X184114.68-045520.9 chandra ccd7 923.342 695.182 41.255 16.2461 0.0014098 0.000555174 2.80467 0.996786 0.881938 0.881938 0 1.86357 F F 1.57e+22 1.92812e-14 1 dsx
Report srcpi bgdpi arf 6 X184121.16-045804.0 chandra ccd7 726.651 363.719 58.893 14.5805 0.00201254 0.000498256 4.00376 0.999945 1.27053 1.27053 0 1.61335 T F 1.57e+22 2.75093e-14 1 dsx
Report srcpi bgdpi arf 40 X184112.52-045551.9 chandra ccd7 988.5 631.796 77.1308 11.6622 0.00263577 0.000398529 5.24363 1 0.508724 0.492 43.8217 1.54479 F F 1.57e+22 3.59113e-14 1 dbx
Report srcpi bgdpi arf rmf 27 X184116.79-045511.4 chandra ccd7 859.439 714.562 237.536 17.4178 0.00811727 0.000595214 16.1486 1 2.82408 2.82408 0 1.98093 T F 1.57e+22 1.11566e-13 1 dsx
Report srcpi bgdpi arf 19 X184115.09-045550.9 chandra ccd7 911.157 634.382 32.3558 17.5837 0.00110569 0.000600884 2.19967 0.984008 0.685017 0.685017 0 1.35154 F F 1.57e+22 1.5075e-14 1 dsx
Report srcpi bgdpi arf 18 X184123.74-045559.6 chandra ccd7 648.241 616.585 95.1056 20.7731 0.00325002 0.000709875 6.46563 1 1.5 1.5 0 2.33746 T F 1.56e+22 4.50474e-14 1 dsx
Report srcpi bgdpi arf 32 X184120.12-045725.4 chandra ccd7 757.658 441.64 70.046 11.4458 0.00239366 0.000391135 4.76198 0.999997 0.594021 0.492 2.85712 1.12588 T F 1.57e+22 3.51921e-14 1 dbx
Report srcpi bgdpi arf 13 X184112.04-045652.1 chandra ccd7 1003.75 509.895 87.6988 18.5119 0.00299691 0.000632603 5.96208 1 1.5172 1.5172 0 0.948475 T F 1.57e+22 4.09583e-14 1 dsx
Report srcpi bgdpi arf 35 X184113.57-045706.6 chandra ccd7 956.695 479.891 65.4266 11.314 0.00223581 0.000386632 4.44794 0.999989 1.22211 0.79259 158.848 0.536665 A F 1.57e+22 3.0566e-14 1 dbx
Report srcpi bgdpi arf 8 X184115.11-045725.1 chandra ccd7 910.396 442.787 95.0997 17.2876 0.00324982 0.000590766 6.46522 1 1.49043 1.49043 0 0.267565 T F 1.57e+22 4.44043e-14 1 dsx
Report srcpi bgdpi arf 14 X184119.95-045643.7 chandra ccd7 763.267 526.989 74.8918 18.2014 0.00255926 0.000621992 5.09142 0.999999 1.5 1.5 0 1.16132 T F 1.57e+22 3.48743e-14 1 dsx
Report srcpi bgdpi arf 23 X184126.25-045543.5 chandra ccd7 572.014 649.326 34.2985 15.1621 0.00117207 0.000518129 2.33174 0.988524 0.900879 0.900879 0 3.01061 F F 1.56e+22 1.63445e-14 1 dsx
Report srcpi bgdpi arf 20 X184123.56-045547.0 chandra ccd7 653.79 642.14 91.5011 17.8855 0.00312685 0.000611198 6.22058 1 1.5 1.5 0 2.4148 T F 1.56e+22 4.42133e-14 1 dsx
Report srcpi bgdpi arf 28 X184130.60-045224.7 chandra ccd7 439.988 1053.3 32.0452 8.03754 0.00109507 0.000274665 2.17855 0.984008 1.39231 1.39231 0 6.0434 F F 1.56e+22 1.6352e-14 1 dsx
Report srcpi bgdpi arf rmf 34 X184120.16-045708.7 chandra ccd7 756.897 476.126 244.659 23.4279 0.00836066 0.000800595 16.6328 1 3 3 0 1.16615 T F 1.57e+22 1.13751e-13 1 dsbcx
Report srcpi bgdpi arf 10 X184121.45-045714.3 chandra ccd7 717.921 464.748 91.6039 16.2653 0.00313036 0.000555831 6.22757 1 1.5 1.5 0 1.43195 T F 1.57e+22 4.27904e-14 1 dsx
Report srcpi bgdpi arf 24 X184121.56-045540.7 chandra ccd7 714.546 654.958 34.7789 16.4154 0.00118849 0.000560961 2.3644 0.99033 0.811346 0.811346 0 2.10451 F F 1.57e+22 1.65083e-14 1 dsbx
Report srcpi bgdpi arf 37 X184115.60-045625.5 chandra ccd7 895.421 564.055 36.406 18.8167 0.00124409 0.00064302 2.47501 0.99188 1.09972 1.09972 0 0.766687 F F 1.57e+22 1.68634e-14 1 dsx
Report srcpi bgdpi arf 7 X184124.69-045730.9 chandra ccd7 619.394 431.125 69.1198 13.3406 0.00236202 0.000455887 4.69902 0.999996 1.5 1.5 0 2.25321 T F 1.56e+22 3.24507e-14 1 dsx
Report srcpi bgdpi arf 22 X184125.42-045546.3 chandra ccd7 597.133 643.653 37.6659 14.5993 0.00128715 0.000498898 2.56067 0.994336 0.952935 0.952935 0 2.80878 F F 1.56e+22 2.06362e-14 1 dsx
Report srcpi bgdpi arf 17 X184121.67-045623.5 chandra ccd7 710.573 567.627 49.8515 10.0003 0.00170356 0.000341737 3.38909 0.999515 0.548614 0.492 108.252 1.68942 F F 1.57e+22 2.33282e-14 1 dbx
Report srcpi bgdpi arf 30 X184118.67-045753.1 chandra ccd7 802.359 385.974 28.9976 13.6331 0.000990928 0.00046588 1.97136 0.974384 0.94214 0.94214 0 1.01165 F F 1.57e+22 1.35229e-14 1 dscx
Report srcpi bgdpi arf 29 X184118.86-045804.5 chandra ccd7 796.658 362.839 39.1211 15.0871 0.00133688 0.000515569 2.6596 0.995294 1.41399 1.41399 0 1.18698 T F 1.57e+22 1.83418e-14 1 dsx
Report srcpi bgdpi arf 5 X184115.62-045254.9 chandra ccd7 895.061 992.11 45.237 7.415 0.00154587 0.000253391 3.07538 0.998563 0.89527 0.89527 0 4.27898 F F 1.56e+22 2.20622e-14 1 dsx
Report srcpi bgdpi arf 60 X184124.15-045744.4 chandra ccd7 635.813 403.535 26.1658 13.4424 0.000894157 0.000459362 1.77885 0.960256 0.650114 0.650114 0 2.17134 F F 1.56e+22 1.22764e-14 1 dsx
Report srcpi bgdpi arf rmf 49 X184124.24-045610.2 chandra ccd7 633.131 595.011 116.844 23.1939 0.00399289 0.000792603 7.94348 1 2.04747 2.04747 0 2.33062 T F 1.56e+22 5.52695e-14 1 dsx
Report srcpi bgdpi arf 53 X184123.24-045746.8 chandra ccd7 663.393 398.771 45.5997 12.5558 0.00155827 0.000429067 3.10003 0.998563 1.26805 1.26805 0 1.97572 T F 1.56e+22 2.13033e-14 1 dsx
Report srcpi bgdpi arf 58 X184119.29-045525.5 chandra ccd7 783.457 685.98 49.1359 15.1658 0.00167911 0.000518259 3.34044 0.999393 1.5 1.5 0 1.96887 T F 1.57e+22 2.3185e-14 1 dsx
Report srcpi bgdpi arf 8 X184116.19-050121.5 chandra ccd6 269.653 814.425 72.1347 9.05875 0.00246504 0.000309563 36.5683 1 1.4512 0.801124 31.7711 4.16025 F F 1.57e+22 4.04389e-14 1 dsx
Report srcpi bgdpi arf 48 X184117.06-045653.6 chandra ccd7 851.1 506.787 31.8261 15.0386 0.00108758 0.000513909 2.16365 0.984008 0.938374 0.938374 0 0.445288 F F 1.57e+22 1.58887e-14 1 dsx
Report srcpi bgdpi arf 54 X184118.46-045657.0 chandra ccd7 808.105 499.553 40.1133 11.091 0.00137078 0.000379009 2.72705 0.996104 0.501093 0.492 35.1246 0.729371 F F 1.57e+22 1.86131e-14 1 dbx
Report srcpi bgdpi arf 59 X184126.00-045518.7 chandra ccd7 579.693 699.774 27.6158 11.7461 0.00094371 0.000401396 1.87742 0.965548 1.07502 1.07502 0 3.18006 F F 1.56e+22 1.32278e-14 1 dsx
Report srcpi bgdpi arf 51 X184114.76-045449.4 chandra ccd7 921.089 759.356 36.8183 11.1378 0.00125818 0.000380609 2.50304 0.993206 1.04928 1.04928 0 2.37864 T F 1.57e+22 1.74608e-14 1 dsx
Report srcpi bgdpi arf 52 X184119.54-045808.5 chandra ccd7 775.809 354.618 48.8469 13.4578 0.00166923 0.000459891 3.32079 0.999393 1.5 1.5 0 1.34894 T F 1.57e+22 2.28701e-14 1 dsx
Report srcpi bgdpi arf 44 X184111.30-045521.0 chandra ccd7 1026.21 695.001 34.6897 8.54247 0.00118544 0.00029192 2.35833 0.99033 0.422829 0.422829 0 2.14238 F T 1.57e+22 1.61989e-14 1 dsx
Report srcpi bgdpi arf 45 X184120.56-045819.9 chandra ccd7 744.779 331.556 64.2189 11.7282 0.00219454 0.000400787 4.36584 0.999985 1.72017 1.72017 0 1.65236 T F 1.57e+22 3.02239e-14 1 dsx
Report srcpi bgdpi arf 50 X184112.81-045502.4 chandra ccd7 980.162 732.944 28.1788 11.0166 0.000962949 0.00037647 1.9157 0.97024 0.946604 0.946604 0 2.27005 F F 1.57e+22 1.32079e-14 1 dsx
Report srcpi bgdpi arf 47 X184112.32-045701.1 chandra ccd7 995.16 491.545 43.8984 13.3673 0.00150013 0.000456798 2.98437 0.998234 1.15787 1.15787 0 0.851679 T F 1.57e+22 2.0529e-14 1 dsx
Report srcpi bgdpi arf 99 X184124.46-045913.4 chandra ccd7 626.558 222.72 33.9442 7.13738 0.00115997 0.000243904 2.30765 0.988524 0.615074 0.615074 0 2.9806 F F 1.56e+22 1.6239e-14 1 dsx
Report srcpi bgdpi arf 63 X184123.66-045736.6 chandra ccd7 650.759 419.381 73.5564 14.8194 0.00251363 0.000506421 5.00063 0.999999 1.5 1.5 0 2.03125 T F 1.56e+22 3.44066e-14 1 dsx
Report srcpi bgdpi arf 65 X184119.01-045721.5 chandra ccd7 792.082 450.238 90.3397 20.5672 0.00308716 0.00070284 6.14162 1 1.5 1.5 0 0.846471 T F 1.57e+22 4.36772e-14 1 dsx
Report srcpi bgdpi arf 83 X184121.74-045644.8 chandra ccd7 709.157 524.807 43.7971 16.8844 0.00149667 0.000576986 2.97749 0.998234 1.56674 1.56674 0 1.57106 F F 1.57e+22 2.04475e-14 1 dsx
Report srcpi bgdpi arf 92 X184121.30-045457.5 chandra ccd7 722.476 742.798 48.9429 14.6552 0.00167251 0.000500807 3.32732 0.999393 1.5 1.5 0 2.65424 T F 1.57e+22 2.33395e-14 1 dbsx
Report srcpi bgdpi arf 68 X184110.91-045608.7 chandra ccd7 1038.01 598.177 62.6644 10.9396 0.00214142 0.000373836 4.26015 0.999981 1.5 1.5 0 1.56939 T F 1.57e+22 2.92653e-14 1 dsx
Report srcpi bgdpi arf 97 X184118.79-045413.8 chandra ccd7 798.589 831.566 28.5396 10.0213 0.000975277 0.000342457 1.94023 0.97024 1.10356 1.10356 0 3.08024 F F 1.57e+22 1.37117e-14 1 dsx
Report srcpi bgdpi arf 85 X184127.12-045621.8 chandra ccd7 545.231 571.058 26.4849 7.21131 0.000905062 0.00024643 1.80054 0.960256 1.18028 0.746892 17.7927 2.9618 A F 1.56e+22 1.37502e-14 1 dbx
Report srcpi bgdpi arf 64 X184115.21-045732.1 chandra ccd7 907.521 428.681 43.6148 14.043 0.00149044 0.000479889 2.96509 0.997836 1.16974 1.16974 0 0.371239 F F 1.57e+22 2.03945e-14 1 dbsx
Report srcpi bgdpi arf 66 X184119.98-045656.0 chandra ccd7 761.946 501.567 25.7012 8.60265 0.00087828 0.000293976 1.74726 0.960256 0.963409 0.522754 40.5045 1.09741 A F 1.57e+22 1.19667e-14 1 dbx
Report srcpi bgdpi arf 7 X184105.82-050522.1 chandra ccd6 584.589 325.356 34.5951 5.88176 0.00118221 0.000200996 17.5378 1 4.11877 4.11877 0 8.51598 F F 1.59e+22 2.27265e-14 1 dsx
Report srcpi bgdpi arf 84 X184127.18-045636.3 chandra ccd7 543.708 542.043 32.9116 12.5587 0.00112468 0.000429167 2.23745 0.986429 1.5 1.5 0 2.88203 T F 1.56e+22 1.56809e-14 1 dsx
Report srcpi bgdpi arf 87 X184116.90-045603.5 chandra ccd7 856.102 608.614 44.7248 14.8385 0.00152837 0.000507073 3.04056 0.998563 1.39263 1.39263 0 1.17867 T F 1.57e+22 2.07981e-14 1 dsx
Report srcpi bgdpi arf rmf 79 X184122.58-045703.2 chandra ccd7 683.67 487.341 127.523 18.8542 0.0043578 0.0006443 8.66948 1 2.96502 2.96502 0 1.68208 T F 1.57e+22 5.96044e-14 1 dsx
Report srcpi bgdpi arf rmf 71 X184117.30-045811.3 chandra ccd7 844.042 348.948 167.615 13.9095 0.00572788 0.000475328 11.3951 1 3 3 0 1.02973 T F 1.57e+22 7.87283e-14 1 dsx
Report srcpi bgdpi arf 91 X184115.13-045536.4 chandra ccd7 909.871 663.757 31.0166 15.0511 0.00105992 0.000514339 2.10862 0.981222 1.11119 1.11119 0 1.61551 T F 1.57e+22 1.44429e-14 1 dsx
Report srcpi bgdpi arf 89 X184127.54-045545.1 chandra ccd7 532.725 646.17 29.4342 11.4385 0.00100585 0.000390885 2.00104 0.974384 1.4624 1.4624 0 3.26243 T F 1.56e+22 1.40661e-14 1 dsx
Report srcpi bgdpi arf 1 X184029.15-045925.6 chandra ccd2 701.39 97.7468 26.7465 8.71343 0.000914002 0.000297762 3.81403 0.999766 5.57867 5.57867 0 11.8098 F F 1.57e+22 1.88004e-14 1 dsx
Report srcpi bgdpi arf 74 X184121.30-045740.4 chandra ccd7 722.289 411.818 29.4312 13.4296 0.00100575 0.000458926 2.00084 0.974384 1.27925 1.27925 0 1.47842 T F 1.57e+22 1.43917e-14 1 dsbx
Report srcpi bgdpi arf 90 X184118.60-045547.3 chandra ccd7 804.385 641.628 40.862 15.2606 0.00139637 0.000521498 2.77795 0.996786 1.41537 1.41537 0 1.56696 T F 1.57e+22 1.91256e-14 1 dsx
Report srcpi bgdpi arf rmf 72 X184118.15-045749.6 chandra ccd7 818.003 393.127 140.632 14.5917 0.0048058 0.00049864 9.56068 1 3 3 0 0.933696 T F 1.57e+22 6.55555e-14 1 dscx
Report srcpi bgdpi arf 76 X184118.62-045724.6 chandra ccd7 803.73 443.886 89.8658 21.385 0.00307096 0.000730786 6.10941 1 1.5 1.5 0 0.753397 T F 1.57e+22 4.47539e-14 1 dsx
Report srcpi bgdpi arf 5 X184056.84-045104.9 chandra ccd3 462.938 283.062 12.7175 4.00005 0.000434592 0.000136693 8.95299 1 1.67761 1.01543 10.358 7.70702 A F 1.55e+22 7.8433e-15 1 dx
Report srcpi bgdpi arf 3 X184101.97-044849.9 chandra ccd3 307.079 557.447 12.492 4.35899 0.000426886 0.000148959 8.79422 1 2.58212 1.69142 109.54 9.03202 A F 1.55e+22 7.89606e-15 1 dx
Report srcpi bgdpi arf 4 X184057.92-045033.6 chandra ccd3 430.25 346.667 9.71459 3.46414 0.000331974 0.000118379 6.83896 0.999999 1.16602 0.878998 144.349 7.97473 F F 1.55e+22 6.0151e-15 1 dx
Report srcpi bgdpi arf 1 X184053.21-045235.2 chandra ccd3 573.333 99.5 9.46223 3.46415 0.00032335 0.000118379 6.6613 0.999999 1.31516 1.03951 140.884 7.25237 F F 1.56e+22 6.05976e-15 1 dx
Report srcpi bgdpi arf 1 X184112.01-050038.0 chandra ccd6 396.2 902.2 8.85875 3.1623 0.000302728 0.000108064 4.49089 0.999789 0.811559 0.492 148.34 3.56319 A F 1.58e+22 4.92169e-15 1 dx
Report srcpi bgdpi arf 2 X184058.24-045121.7 chandra ccd3 420.5 248.833 7.18204 3.00006 0.00024543 0.00010252 5.05608 0.99995 1.38768 0.765341 122.296 7.27315 A F 1.56e+22 9.57229e-15 1 dx
Report srcpi bgdpi arf 6 X184050.08-045235.9 chandra ccd3 668.375 98 6.88227 2.82845 0.000235186 9.6656e-05 4.84504 0.999747 0.670219 0.492 107.688 7.86289 F F 1.56e+22 4.31162e-15 1 dx
Report srcpi bgdpi arf 4 X184058.85-050121.3 chandra ccd6 795.7 814.3 4.2295 2.23609 0.000144533 7.64133e-05 2.14412 0.981704 0.713099 0.492 139.183 5.91081 F F 1.58e+22 2.49112e-15 1 dx
Report srcpi bgdpi arf 2 X184052.68-050310.5 chandra ccd6 983.167 592.167 4.02791 2.44954 0.000137645 8.37074e-05 2.04192 0.955084 1.94825 0.759335 52.7693 8.28764 A F 1.59e+22 2.63293e-15 1 dx
Report srcpi bgdpi arf 5 X184112.81-050006.8 chandra ccd6 371.7 965.7 4.02315 2.23609 0.000137482 7.64134e-05 2.03951 0.955084 0.492 0.492 45 3.00886 F F 1.58e+22 2.19661e-15 1 dx

counts and rate are bgd.-subtracted, based on simple spatial fitting (if done) or extracted counts from aperture otherwise (N.B., in either case aperture counts are given csv file).
cntserr, rateerr = Error on (source) counts and count rate, based on error in total counts
SNR = signal-to-noise ratio, computed using Nsrc/sqrt(Nbgd)
poisprob = Poisson probability of observing total counts given bgd. counts
sigmaj, sigmin = source extent (from detection output or spatial fitting) in units of arcsecs.
incang = position angle of source (inclination from x-axis)
cnts_soft = bgd.-subtracted counts in soft band (0.50 - 2.00 KeV, always taken directly from source aperture rather than model fitting)
cnts_hard = bgd.-subtracted counts in hard band (2.00 - 7.99 KeV, always taken directly from source aperture rather than model fitting)
hr, hr_err = hardness ratio ([cnts_hard-cnts_soft]/[cnts_hard+cnts_soft]) and error
ext = source extension flag: F = false (not extended), T = true (extended), A = asymetric (ratio of sigmaj/sigmin > 1 + x, where x = 0.5 by default)
var = variability flag: U = unknown, F = false (is not variable), T = true
N_H = Galactic column density as determined from LHEASOFT nh program
flux = flux determined from count rate using pimms (in the 0.30-8.00 keV bandpass for a power-law model with ph. index = 1.8)
vign = vignetting correction
Flags: d = detection parameters, s = simple spatial fitting parameters, b = simple spatial fitting failed, p = poor simple spatial fit, x = extracted events parameters, t = temporal anaylsis parameters, i = psf spatial fitting parameters, f = spectral fitting parameters, c = source is confused, u = user-defined source, v = detected source coincident with user-defined source, r = source is in region-of-interest