About Chandra Archive Proposer Instruments & Calibration Newsletters Data Analysis HelpDesk Calibration Database NASA Archives & Centers Chandra Science Links


Chandra Data Archive Retrieval Statistics

Download Volume (Bytes)

This table provides the total number of MBytes of Chandra data downloaded per month from the Chandra Data Archive and its mirror sites at LEDAS, ASDC (Italy), IUCAA (India), and HEASARC. The numbers for the CDA are split into different datatype categories.

The columns are:

  • Provisional Retrieval Interface
  • Data distribution of proprietary data to and by Guest Observer teams
  • Quicklook images (distributed soon after receipt of telemetry)
  • Caldb distributions
  • Prepackaged: special datasets, such as the deep field tar files and the orbit ephemeris files
  • The anonymous ftp archive
  • WebChaSeR, using the ftp staging area
  • ChaSeR, using the ftp staging area
  • ChaSeR, using direct data transfer
  • Total download volume from LEDAS mirror (UK)
  • Total download volume from the anonymous ftp archive mirror at ASDC (Italy)
  • Total download volume from the anonymous ftp archive mirror at IUCAA (India)
  • Total downloads from the anonymous ftp archive mirror at HEASARC
  • Grand total download volume

Month & Year ProvRetrI/f (MB)GOs (MB)QuickLook (MB)Caldb (MB)Prepack'd (MB)ftp archive (MB)WebChaser-ftp (MB)Chaser-ftp (MB)Chaser-dir (MB)LEDAS(UK) (MB)ASDC(ITALY) (MB)IUCAA(INDIA) (MB)HEASARC (MB)TOTAL (MB)
Aug 1999 733.5623680 0 0 0 0 0 0 0 0 0 0 0 733.562368
Sep 1999 17444.6175590 0 0 0 0 0 0 0 0 0 0 0 17444.617559
Oct 1999 15114.904425189.113344 0 0 66.680152 0 0 0 0 0 0 0 0 15370.697921
Nov 1999 9284.47388416860.3264 0 0 17.30048 0 0 0 0 0 0 0 0 26162.100764
Dec 1999 18976.46265416198.536704 0 0 68.72064 0 0 0 0 0 0 0 0 35243.719998
Jan 2000 13202.59252712429.593088 0 0 0 0 0 0 0 0 0 0 0 25632.185615
Feb 2000 11565.17039419626.459136 0 0 86.518784 0 0 0 0 0 0 0 0 31278.148314
Mar 2000 12481.37336933487.55456 6.149496 0 250.473277 0 0 0 0 0 0 0 0 46225.550702
Apr 2000 7961.42284943136.759296 8.091546 0 102.131136 0 0 0 0 0 0 0 0 51208.404827
May 2000 7726.77580541290.774872 11.50864 0 98.758656 0 0 0 0 0 0 0 0 49127.817973
Jun 2000 10551.10416731577.496641 8.185152 0 59.042368 0 0 0 0 0 0 0 0 42195.828328
Jul 2000 9450.00388321565.298176 9.389737 0 66.927424 0 0 0 0 0 0 0 0 31091.61922
Aug 2000 5314.99812630743.253954 11.305075 0 65.362816 0 0 0 0 0 0 0 0 36134.919971
Sep 2000 4123.05844926281.896126 8.492469 0 0.67392 0 0 0 0 0 0 0 0 30414.120964
Oct 2000 5966.85248334249.177128 12.328123 0 1.1664 0 0 0 0 0 0 0 0 40229.524134
Nov 2000 12313.70601454398.702456 10.770171 0 0 0 0 0 0 0 0 0 0 66723.178641
Dec 2000 11098.79861227786.193584 4.859713 54619.643771 55.581952 0 0 0 0 0 0 0 0 93565.077632
Jan 2001 23861.23928237588.173824 9.104979 43014.548332 3.57696 0 0 0 0 0 0 0 0 104476.643377
Feb 2001 19700.97440941247.343408 7.475954 19491.162892 0 0 0 0 0 0 0 0 0 80446.956663
Mar 2001 35683.72806441149.43694 6.762135 20115.61734 3473.414908 0 0 0 0 0 0 0 0 100428.959387
Apr 2001 30519.91457323097.603072 3.016275 11207.474116 21617.169121 0 0 0 0 0 0 0 0 86445.177157
May 2001 44820.54859318307.897344 10.140956 11527.428524 8858.417396 0 0 0 0 0 0 0 0 83524.432813
Jun 2001 50238.76462230439.862758 8.338545 14442.880818 5569.390904 0 0 0 0 0 0 0 0 100699.237647
Jul 2001 37363.04955823165.090304 8.937734 11953.893798 4952.621053 0 0 467.621888 6620.4606415 0 0 0 0 84531.6749765
Aug 2001 32587.18077227513.663488 6.018139 19586.311259 48630.845676 0 0 7832.198403 14145.222161 0 0 0 0 150301.439898
Sep 2001 43758.39476512528.305152 7.570276 12206.671767 2837.81315 0 192.447488 5009.024392 9197.719105 0 0 0 0 85737.946095
Oct 2001 34085.16159728514.153722 7.496638 30286.245615 5510.508424 0 142.77888 8378.318357 22865.5634155 0 0 0 0 129790.2266485
Nov 2001 53902.82386225359.525888 7.422729 32830.782505 43750.855528 0 667.3152 47560.226983 23833.751292 0 0 0 0 227912.703987
Dec 2001 22655.2078817574.199296 4.255889 30039.615855 703.904296 0 12416.52812 4303.244004 9687.883944 0 0 0 0 87384.839285
Jan 2002 23348.21814117164.903683 8.218834 25434.900244 284.795795 0 21423.820232 8780.407184 12878.3385945 0 0 0 0 109323.6027075
Feb 2002 22548.81683829821.369344 8.615378 32387.417853 6340.635855 0 68358.76188 15245.981433 38830.232044 0 0 0 0 213541.830625
Mar 2002 40922.44147516283.078144 10.684608 35429.92449 18.765474 0 59758.849835 14925.165568 16755.531351 0 0 0 0 184104.440945
Apr 2002 19492.48426113193.936896 7.02857 34121.342441 4359.153158 0 57530.12992 12132.846592 18633.761669 0 0 0 0 159470.683507
May 2002 23650.29074419355.109888 21.389287 31760.50586 1106.324529 0 55303.822448 19583.284418 30355.702341 351.257493 0 0 0 181487.687008
Jun 2002 24712.96040912146.940416 4.892846 21988.188725 451.323235 0 143220.596316 15844.401848 18837.881631 0 0 0 0 237207.185426
Jul 2002 41129.76846418033.01602 6.875509 21769.326557 9061.888919 0 52401.851815 8459.996776 23385.312702 0 0 0 0 174248.036762
Aug 2002 33257.46313527794.882986 4.981984 21693.837349 377.386023 0 39974.663124 7077.942272 23263.275256 21.61007 0 0 0 153466.042199
Sep 2002 29387.21311113765.583954 7.843939 23699.800226 382.152354 7647.387529 34866.761656 17127.31092 20525.7849955 238.168883 0 0 0 147648.0075675
Oct 2002 39854.17243813577.558016 7.182703 38810.085486 6867.421832 11042.64114 88378.077778 15759.872512 40819.4264855 12.335017 0 0 0 255128.7734075
Nov 2002 21125.04990915208.637952 6.119284 60402.590002 3522.056259 7997.282908 47926.309849 13992.15104 19674.6064285 5.799936 0 0 0 189860.6035675
Dec 2002 19455.0380738916.444672 7.968773 44728.692491 5861.470425 5334.876004 36452.447768 38066.504526 15714.715722 1247.300177 0 0 0 175785.458631
Jan 2003 33948.70825417776.96768 9.840302 32059.889305 4527.15969 95764.880985 62787.850531 3093.940208 14203.5542545 950.227864 0 0 0 265123.0190735
Feb 2003 25331.64118810726.975328 10.02168 51073.490112 194.492584 13809.434408 76046.56625 12341.5077 19727.719988 1850.450901 100.154795 0 0 211212.454934
Mar 2003 20452.01766416937.3184 14.104297 36584.490124 5355.975415 12499.826899 55993.389665 16485.451776 14190.955664 1019.38283 870.25117 0 0 180403.163904
Apr 2003 10611.69049614234.530304 8.887237 31013.861006 592.227606 5761.284366 35903.901472 6731.779299 18531.2480015 316.919504 567.463805 0 0 124273.7930965
May 2003 11361.61740819023.2192 5.603917 31540.433061 960.8833 15426.248616 61827.823824 1474.239488 9079.127851 1283.88206 5797.838271 0 0 157780.916996
Jun 2003 829.41030414715.212669 5.556105 29496.503534 23.149234 11836.347181 76548.209597 8832.188416 10634.198057 2108.640539 656.860227 0 0 155686.275863
Jul 2003 42166.97697421910.44352 5.831344 27496.254298 1717.691936 75304.689209 77868.591192 50079.36 18152.848697 4951.51421 5798.986883 0 0 325453.188263
Aug 2003 29725.18444818939.56352 19.553237 92913.898481 952.380419 7923.409652 48386.75714 14603.995648 23833.850893 908.910886 9821.33586 0 0 248028.840184
Sep 2003 60839.21817614248.319488 25.885641 44445.126202 9.081161 13690.507895 47870.55084 7623.74607 7618.2503125 1570.692096 7255.438555 0 0 205196.8164365
Oct 2003 34803.52062416078.06976 21.914586 42167.393845 317.962053 30566.334962 70741.761118 2960.894768 20953.1111515 5.81632 9823.68009 0 0 228440.4592775
Nov 2003 51424.4571726667.033468 15.504582 30762.216801 1451.442175 17132.343489 61666.460548 7387.37414 8461.850808 386.368 11980.446144 0 0 197335.497327
Dec 2003 40338.92709713280.244736 2.63693 55812.87739 152.587338 18089.506775 68615.958582 4749.140992 5631.8538915 1729.88672 5800.790308 0 0 214204.4107595
Jan 2004 20160.94022415191.707136 4.91244 70967.080949 2326.497607 109535.157505 65369.985599 4716.056064 14905.2870825 3015.896576 6549.54272 0 0 312743.0639025
Feb 2004 29724.24538811773.523929 6.859372 72513.073877 971.664783 50714.503978 111506.390208 4303.739392 24248.125017 924.155535 2900.649416 0 0 309586.930895
Mar 2004 25778.75459223102.749184 7.191801 69443.223896 1389.14005 34934.893081 145928.814491 4483.51744 11980.6112495 0 0 0 0 317048.8957845
Apr 2004 20480.04117353.893376 3.841846 39264.553838 11.239847 64358.108094 54191.77984 4079.418368 20292.9367845 975.930368 0.00237 0 0 221011.7457315
May 2004 16339.56649114261.553152 3.647206 30220.904323 1021.945792 94869.484765 181055.171119 10844.430761 42293.43055 1061.320192 550.04559 0 0 392521.499941
Jun 2004 14868.2708612879.714096 7.309948 46926.343024 11183.025705 69666.378982 81561.766529 4573.565952 41662.421703 221.184049 0 0 0 283549.980848
Jul 2004 18219.48876814992.64768 4.109188 99527.637593 21.464334 83262.999573 113234.882911 16454.528512 12053.679194 6778.851863 0 0 0 364550.289616
Aug 2004 15454.27916816492.065792 4.625881 96407.3414 6099.67413 63761.427274 86248.91556 6501.901824 10899.0771945 478.568919 0 0 0 302347.8771425
Sep 2004 104038.39948815433.224192 4.525076 45532.502972 4602.104471 634119.636579 82529.6962 2225.593344 8392.4722625 732.415488 0 0 0 897610.5700725
Oct 2004 78960.52607621677.794688 3.236863 57722.172343 3369.506645 48536.056258 97575.115788 3899.673429 6675.474622 476.555264 0 0 0 318896.111976
Nov 2004 14250.80283614277.29152 3.294149 54320.444756 731.422455 29987.802527 109222.976919 2078.29043 7149.6414275 1228.542976 0 0 0 233250.5099955
Dec 2004 13627.12586922.086144 5.43169 91177.004663 525.16826 48402.923305 96050.803376 7530.619691 13329.3969105 839.090688 12379.918386 0 0 283889.5689825
Jan 2005 18037.115115174.19264 2.53313 69727.219146 929.963573 142771.052222 116358.768 50182.054444 17379.5388245 1319.219453 0 0 2854.633571 419736.2901185
Feb 2005 43195.8350478.016896 2.994769 59263.113583 4317.506763 473787.384778 153327.348053 23429.231104 15990.84443 1715.98592 0.01029 0 11451.765889 786490.037522
Mar 2005 17810.7616060 3.116823 50908.728097 11060.543545 684517.473447 136141.522074 18836.78276 35464.3655655 9e-05 34.280051 0 4.123874 954781.6979325
Apr 2005 17991.212056315.961344 4.383672 38678.233791 6.166451 109668.934652 101045.807133 6747.628889 19875.6610685 0 0 0 1337.247366 295671.2364225
May 2005 7922.818966614.06208 3.880641 44146.150362 263.0814 72559.038089 147835.264512 959.315968 48688.9551 0 0 0 3734.878254 326727.445372
Jun 2005 37573.688620 2.981416 57997.269605 19.502893 89700.949911 143326.152032 6649.330696 34784.5378715 0 0 0 840.518921 370894.9319655
Jul 2005 41773.3504940 3.135575 108246.157268 0.462737 69657.046808 152549.500424 16189.74464 25495.391817 0 0 0 4669.415443 418584.205206
Aug 2005 21502.37125743.430656 2.538289 76748.932622 1883.010403 33255.538648 118071.364107 3585.603072 16641.574057 0 0 0 112.056053 272546.419157
Sep 2005 27919.120573331.885056 1.585568 44754.404005 22.737898 99624.269804 68398.536896 12019.842048 28474.3420515 0 0 0 1009.866418 282556.5903175
Oct 2005 16783.289388107.820032 2.092717 41903.715936 25.458464 119918.863449 21984.76196 10553.282304 7014.668618 0 0 175.365471 3528.21093 221997.529269
Nov 2005 24323.2312320 3.004401 106759.516729 433.193534 105864.025475 19994.389504 4709.633536 22492.728225 27.851776 0 216.563091 20781.214339 305605.351842
Dec 2005 12716.444229357.301248 3.113154 100283.801213 1035.863548 141215.635056 23769.490432 5923.974612 5630.6232805 737.943552 4.531208 492.413437 19310.545162 311481.6801315
Jan 2006 16625.084561201.321472 2.473708 103852.925415 575.841271 215715.698137 17053.396992 1640.334548 9586.334836 0.049299 5.881932 2.854664 8767.948978 374030.145813
Feb 2006 8901.570272469.584896 2.865466 97373.387692 447.080119 246951.298238 19578.235904 3405.147136 28287.203409 0.034816 4853.640023 772.32128 26075.907021 437118.276272
Mar 2006 13623.529175201.490432 3.499531 70596.487859 1535.512261 272777.065194 23684.170932 1611.041225 29105.726866 237.330993 61.412332 16.091767 2372.081227 415825.439794
Apr 2006 9704.4041470 2.346028 55632.581048 232.406286 457790.595156 26696.961536 5824.833536 12145.2309975 152.828928 1949.792492 1548.727276 8848.246478 580528.9539085
May 2006 7917.3446240 2.737928 75271.548524 891.27546 267933.94799 27520.555008 3714.260992 8434.694951 277.921792 2.086383 0.406614 292792.522869 684759.303135
Jun 2006 6908.277248104.167936 3.471534 65786.298956 866.024482 303415.901748 31452.407808 5128.542208 13259.4575195 168.4352 1217.72783 28.79488 68549.573681 496889.0810305
Jul 2006 954.7415570 3.088621 67511.697108 507.015205 294739.425956 30339.587072 4045.787648 3075.656325 0 0.71424 1.383822 19863.079666 421042.17722
Aug 2006 215.4014720 0.686944 69296.09759 245.89156 459976.662344 16229.762165 13162.864128 14473.349877 0 0 1514.06276 51047.498663 626162.277503
Sep 2006 27.779584131.470336 1.357814 71957.466332 987.471698 333193.84013 18727.648768 7902.716928 13938.337729 0 0 795.502911 726.524171 448390.116401
Oct 2006 509.6468480 3.183386 57331.204003 811.935064 351343.277699 18121.723392 513.670144 4581.324295 0 630.354543 0 4448.677972 438294.997346
Nov 2006 00 2.211536 100110.533889 14585.499115 353764.128753 18424.1152 2158.067712 11896.864515 1.359921 7774.527275 0.305893 26911.62797 535629.241779
Dec 2006 00 1.948517 143737.99095 26081.681892 290077.183235 15130.161152 1527.543808 9319.602646 0.016433 0 0.842827 70252.734813 556129.706273
Jan 2007 00 1.656004 276570.943185 9887.619422 313781.356203 6144.133568 5138.927616 8212.6168225 0.016433 0 0.522872 95130.827425 714868.6195505
Feb 2007 037.03808 1.7744 194008.932468 175.322908 296632.679902 9984.985088 1777.653759 11414.496651 0 0 0 14133.184619 528166.067875
Mar 2007 00 2.352168 150703.329583 4.173044 408781.834974 5151.42656 948.7872 4337.3516055 23.698059 0 0.017665 56243.375519 626196.3463775
Apr 2007 00 0.668713 127951.87149 393.6948 242149.448295 10079.660032 5324.869632 2835.536187 0.016433 0 2851.355919 8450.451698 400037.573199
May 2007 00 1.444152 164602.317453 818.676839 336780.218716 11375.572992 1857.61792 4178.7095815 387.404337 163.84 0.556556 31139.172765 551305.5313115
Jun 2007 00 3.350405 172891.819254 810.466139 453413.194347 25935.417344 3577.93792 2214.2204575 0 0 3.795927 54258.14407 713108.3458635
Jul 2007 00 1.82035 173865.812022 877.716098 350086.752642 11005.696 35.897344 8650.366422 707.713634 0 3.681747 3518.317227 548753.773486
Aug 2007 00 2.038368 146240.576782 6.708147 346539.756442 31553.660928 1432.86272 1413.3370565 0.163889 0 1.603373 24917.384694 552108.0923995
Sep 2007 038.63552 2.142686 135909.610047 977.897135 252327.24934 19860.078592 1415.8848 7448.4682755 0.065626 0 0.77186 123088.25542 541069.0593015
Oct 2007 00 1.83904 146506.610598 828.676302 236292.852375 17643.730944 2469.210112 4451.2265225 0 0 1.259402 100208.383129 508403.7884245
Nov 2007 00 1.470875 140537.887684 5.365704 239933.153537 9293.959168 185.16992 5461.3430485 0 0 2661.574491 14162.175505 412242.0999325
Dec 2007 00 2.077722 166725.951942 3376.626498 214548.063459 13295.398912 1465.808896 5760.0609625 0 771.903069 3174.2768 148535.10248 557655.2707405
Jan 2008 00 2.62116 275054.633757 6121.38408 238449.620025 16042.698752 1758.55616 9547.193966 0 0 526.334046 0 547503.041946
Feb 2008 00 2.148873 167434.043811 23190.966382 317384.725007 27130.435584 5126.28736 21195.1476835 0 41.813343 343.204508 0 561848.7725515
Mar 2008 00 1.846314 154765.283672 14498.243186 331444.486561 4034.861056 658.47296 1448.8516975 0 0 92.817563 0 506944.8630095
Apr 2008 00 2.027507 197537.769547 1258.139434 444450.797073 12674.619392 2381.350912 4179.983493 0 13.267256 2005.032594 0 664502.987208
May 2008 00 5.663678 185792.553723 4949.814186 339216.959066 18781.966336 15771.219402 11286.938934 0 0 527.494109 0 576332.609434
Jun 2008 00 1.643817 191130.419912 2948.582016 220567.06647 12762.546176 2205.62432 12917.154681 0 0 0.053178 0 442533.09057
Jul 2008 00 0.16075 55522.838659 42.454827 43167.165975 433.16224 0 28592.6077745 0 0 0 0 127758.3902255
Month/Year ProvRetrI/f (MB)GOs (MB)QuickLook (MB)Caldb (MB)Prepack'd (MB)ftp archive (MB)WebChaser-ftp (MB)Chaser-ftp (MB)Chaser-dir (MB)LEDAS(UK) (MB)ASDC(ITALY) (MB)IUCAA(INDIA) (MB)HEASARC (MB)TOTAL (MB)
ALL 2028041 1297400 587 6984567 372925 13298141 4416699 732557 1342508 41449 98380 17760 1324075 31955091

Download Volume (Number of Files)

This table provides the total number of files (largely tarfiles) that were downloaded per month from the Chandra Data Archive and its mirror sites at LEDAS, ASDC (Italy), IUCAA (India), and HEASARC. The numbers for the CDA are split into different datatype categories.

Month/Year ProvRetrI/f (files) GOs (files)QuickLook (files)Caldb (files)Prepack'd (files)ftp archive (files)WebChaser-ftp (files)Chaser-ftp (files)Chaser-dir (files)LEDAS(UK) (files)ASDC(ITALY) (files)IUCAA(INDIA) (files)HEASARC (files)TOTAL (files)
Aug 1999 30 0 0 0 0 0 0 0 0 0 0 0 0 30
Sep 1999 605 0 0 0 0 0 0 0 0 0 0 0 0 605
Oct 1999 403 1 0 0 4 0 0 0 0 0 0 0 0 408
Nov 1999 378 81 0 0 1 0 0 0 0 0 0 0 0 460
Dec 1999 575 94 0 0 4 0 0 0 0 0 0 0 0 673
Jan 2000 398 110 0 0 0 0 0 0 0 0 0 0 0 508
Feb 2000 518 112 0 0 6 0 0 0 0 0 0 0 0 636
Mar 2000 387 183 158 0 83 0 0 0 0 0 0 0 0 811
Apr 2000 238 178 162 0 53 0 0 0 0 0 0 0 0 631
May 2000 242 170 262 0 134 0 0 0 0 0 0 0 0 808
Jun 2000 265 201 192 0 44 0 0 0 0 0 0 0 0 702
Jul 2000 334 153 162 0 48 0 0 0 0 0 0 0 0 697
Aug 2000 195 177 226 0 91 0 0 0 0 0 0 0 0 689
Sep 2000 226 180 174 0 2 0 0 0 0 0 0 0 0 582
Oct 2000 182 288 227 0 1 0 0 0 0 0 0 0 0 698
Nov 2000 335 359 199 0 0 0 0 0 0 0 0 0 0 893
Dec 2000 277 219 106 760 116 0 0 0 0 0 0 0 0 1478
Jan 2001 451 365 239 498 10 0 0 0 0 0 0 0 0 1563
Feb 2001 485 296 154 382 0 0 0 0 0 0 0 0 0 1317
Mar 2001 826 314 151 636 77 0 0 0 0 0 0 0 0 2004
Apr 2001 753 127 85 310 356 0 0 0 0 0 0 0 0 1631
May 2001 899 127 198 238 104 0 0 0 0 0 0 0 0 1566
Jun 2001 1066 239 143 432 74 0 0 0 0 0 0 0 0 1954
Jul 2001 820 305 150 259 120 0 0 5 47 0 0 0 0 1706
Aug 2001 1061 223 132 535 181 0 0 62 109 0 0 0 0 2303
Sep 2001 1011 127 127 359 121 0 5 53 92 0 0 0 0 1895
Oct 2001 1010 155 137 658 69 0 12 80 145 0 0 0 0 2266
Nov 2001 1224 149 150 413 289 0 11 134 106 0 0 0 0 2476
Dec 2001 655 77 112 518 28 0 93 109 80 0 0 0 0 1672
Jan 2002 730 165 177 382 46 0 196 77 94 0 0 0 0 1867
Feb 2002 751 153 169 494 85 0 383 95 161 0 0 0 0 2291
Mar 2002 1399 153 225 373 36 0 448 84 143 0 0 0 0 2861
Apr 2002 523 134 150 374 145 0 303 86 154 0 0 0 0 1869
May 2002 855 176 398 443 66 0 435 117 141 5 0 0 0 2636
Jun 2002 639 130 83 412 98 0 330 108 152 0 0 0 0 1952
Jul 2002 895 174 134 247 125 0 330 81 193 0 0 0 0 2179
Aug 2002 771 127 111 9069 115 0 304 54 114 17 0 0 0 10682
Sep 2002 645 152 149 274 36 4204 250 57 166 8 0 0 0 5941
Oct 2002 965 151 157 12829 445 1995 730 70 181 6 0 0 0 17529
Nov 2002 619 169 115 793 154 3293 783 67 116 2 0 0 0 6111
Dec 2002 548 143 145 590 73 1609 304 84 94 20 0 0 0 3610
Jan 2003 982 125 210 374 24 65737 642 43 114 14 0 0 0 68265
Feb 2003 512 164 206 571 375 5895 480 57 140 19 15 0 0 8434
Mar 2003 607 181 268 767 166 5323 498 34 101 12 43 0 0 8000
Apr 2003 322 383 173 324 30 5616 300 72 102 2 60 0 0 7384
May 2003 267 90 132 337 463 16200 404 17 73 8 868 0 0 18859
Jun 2003 19 125 99 586 51 6954 509 43 69 34 69 0 0 8558
Jul 2003 1020 108 178 354 65 9713 436 84 111 14 899 0 0 12982
Aug 2003 981 158 552 1003 57 3547 298 40 78 99 1470 0 0 8283
Sep 2003 1629 128 432 462 44 5095 332 45 57 14 1116 0 0 9354
Oct 2003 1029 99 366 423 64 4984 463 28 145 2 1500 0 0 9103
Nov 2003 1581 114 390 355 40 4667 441 38 62 3 1824 0 0 9515
Dec 2003 790 150 82 659 35 6392 436 35 35 12 868 0 0 9494
Jan 2004 403 141 164 828 59 88805 433 31 71 12 980 0 0 91927
Feb 2004 721 121 164 983 453 19196 709 23 99 5 434 0 0 22908
Mar 2004 559 138 159 710 47 22099 878 27 97 0 0 0 0 24714
Apr 2004 510 101 92 420 73 15466 451 27 124 6 30 0 0 17300
May 2004 299 85 97 289 24 8792 728 36 194 8 90 0 0 10642
Jun 2004 363 113 166 451 725 5884 514 31 85 11 0 0 0 8343
Jul 2004 331 119 96 822 18 29510 635 21 371 120 0 0 0 32043
Aug 2004 411 116 97 772 8212 41747 555 39 49 7 0 0 0 52005
Sep 2004 3129 117 80 319 450 249841 406 10 57 5 0 0 0 254414
Oct 2004 1671 74 77 555 29 21262 1348 37 26 12 0 0 0 25091
Nov 2004 453 89 101 392 22 10799 543 144 37 48 0 0 0 12628
Dec 2004 368 1 148 1378 29 58472 524 907 77 13 248 0 0 62165
Jan 2005 313 5 72 870 40 45067 695 1582 221 534 0 0 1381 50780
Feb 2005 798 1 108 946 91 158334 1071 50 161 10 36 0 3108 164714
Mar 2005 2165 0 105 719 105 245631 1087 353 126 1 4 0 384 250680
Apr 2005 4429 1 126 537 44 175445 711 48 124 0 31 0 699 182195
May 2005 1456 4 113 703 18 69166 816 6 107 0 0 0 1175 73564
Jun 2005 1328 0 66 1344 8 45837 880 46 76 0 0 0 231 49816
Jul 2005 1998 0 93 980 12 36681 1016 40 141 0 0 0 1043 42004
Aug 2005 662 3 58 638 118 15991 685 23 88 0 0 0 332 18598
Sep 2005 919 1 52 1141 55 41999 559 21 97 0 0 0 432 45276
Oct 2005 1465 2 59 350 72 11144 152 39 51 0 0 36 1049 14419
Nov 2005 450 0 98 1162 84 8519 180 23 104 1 0 16 1873 12510
Dec 2005 276 3 88 633 104 19331 182 47 60 9 31 24 2248 23036
Jan 2006 561 3 58 677 10061 24557 162 38 58 3 924 6 1957 39065
Feb 2006 289 6 85 747 2120 40843 219 34 72 2 1054 6 7242 52719
Mar 2006 1423 7 115 490 11142 91519 241 18 42 5 4 29 767 105802
Apr 2006 341 0 86 594 4719 92978 192 7 75 1 62 21 1357 100433
May 2006 240 0 92 755 576 56389 171 10 37 2 39 8 17590 75909
Jun 2006 377 1 120 532 262 76784 221 89 60 1 176 2 35354 113979
Jul 2006 29 0 96 522 248 117392 130 8 19 0 31 18 4981 123474
Aug 2006 4 0 21 600 900 223005 136 16 24 0 0 13 15776 240495
Sep 2006 1 3 41 728 229 94102 107 19 35 0 0 34 310 95609
Oct 2006 5 0 85 638 972 85909 150 3 29 0 63 0 866 88720
Nov 2006 0 0 55 757 727 70643 124 8 26 2 150 17 2114 74623
Dec 2006 0 0 38 10943 8985 76675 74 4 34 1 0 37 36676 133467
Jan 2007 0 0 38 4179 1187 79679 132 9 49 1 0 11 3186 88471
Feb 2007 0 1 52 878 77 59737 115 20 47 0 0 5 1523 62455
Mar 2007 0 0 57 651 46 31417 41 10 28 4 0 7 3996 36257
Apr 2007 0 0 19 556 121 34321 64 24 40 1 0 37 3158 38341
May 2007 0 0 55 549 113 47282 105 12 37 2 48 1 7935 56139
Jun 2007 0 0 80 488 38 118675 150 7 26 0 0 34 22795 142293
Jul 2007 0 0 50 495 87 63573 115 2 41 5 0 41 1965 66374
Aug 2007 0 0 54 1105 65 60424 166 7 25 2 0 35 8146 70029
Sep 2007 0 1 53 387 66 21192 142 7 35 2 0 24 59168 81077
Oct 2007 0 0 52 508 43 20900 76 6 22 0 0 51 35786 57444
Nov 2007 0 0 42 608 40 202666 85 1 24 0 0 69 7230 210765
Dec 2007 0 0 71 617 189 273516 141 6 24 0 186 14 25020 299784
Jan 2008 0 0 74 2101 312 237737 146 23 32 0 28 11 0 240464
Feb 2008 0 0 56 495 316 258649 148 14 51 0 280 115 0 260124
Mar 2008 0 0 57 2312 1115 280490 36 2 7 0 319 18 0 284356
Apr 2008 0 0 55 838 95 266939 103 13 28 0 992 93 0 269156
May 2008 0 0 157 504 681 281352 403 46 51 0 0 37 0 283231
Jun 2008 0 0 45 517 1973 246041 115 7 86 0 0 27 0 248811
Jul 2008 0 0 5 403 18 48205 13 0 91 0 0 0 0 48735
Month/Year ProvRetrI/f (files) GOs (files)QuickLook (files)Caldb (files)Prepack'd (files)ftp archive (files)WebChaser-ftp (files)Chaser-ftp (files)Chaser-dir (files)LEDAS(UK) (files)ASDC(ITALY) (files)IUCAA(INDIA) (files)HEASARC (files)TOTAL (files)
ALL 63675 9919 13190 92609 63269 5279833 30137 6040 7273 1127 14972 897 318853 5901794



This page is maintained by the Chandra Data Archive Operations group

Last modified: 2008-07-06




The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory.
60 Garden Street, Cambridge, MA 02138 USA.    Email: cxcweb@head.cfa.harvard.edu
Smithsonian Institution, Copyright © 1998-2004. All rights reserved.