Locating noise-dominated data in quadrant 0
    : Time   totcounts   fraction
    : 234025616.0  2205  0.830
    : 234025723.0  2054  0.825
    : 234026619.0  2334  0.868
    : 234026620.0  2128  0.838
    : 234027496.0  2071  0.846
    : 234028091.0  2546  0.893
    : 234028207.0  2040  0.825
    : 234035690.0  2439  0.879
    : 234035691.0  2717  0.983
    : 234038572.0  3256  0.918
    : 234038857.0  2477  0.882
    : 234038858.0  2186  0.879
    : 234038942.0  3456  0.926
    : 234041646.0  2209  0.790
    : 234041648.0  2004  0.779
    : 234044006.0  2980  0.896
    : 234044010.0  2720  0.887
    : 234044011.0  2705  0.955
    : 234044012.0  2302  0.951
    : 234047830.0  2451  0.818
    : 234047836.0  2137  0.754
    : 234047882.0  2291  0.821
    : 234049252.0  2012  0.810
    : 234056130.0  2684  0.939
    : 234059694.0  2336  0.839
    : 234059696.0  2127  0.814
    : 234059905.0  2383  0.823
    : 234061661.0  2731  0.818
    Total number of 1 second bins: 39995
    Bins with >0 counts          : 35403
    Bins with >2000 counts       : 28
    28 of 28 high count rate bins were dominated by noise
    Noise dominated 0.07% of total time, 0.08% of detector on time (defined as non-zero counts)


Locating noise-dominated data in quadrant 1
    : Time   totcounts   fraction
    : 234024459.0  2743  0.886
    : 234024461.0  2821  0.862
    : 234024464.0  2115  0.828
    : 234024465.0  2319  0.864
    : 234024466.0  2327  0.888
    : 234024468.0  3177  0.895
    : 234024472.0  2859  0.865
    : 234024474.0  2113  0.894
    : 234024475.0  2486  0.940
    : 234024476.0  2379  0.934
    : 234024477.0  2637  0.959
    : 234024478.0  2045  0.864
    : 234024479.0  2739  0.933
    : 234024480.0  2045  0.877
    : 234024482.0  2395  0.891
    : 234024483.0  2652  0.949
    : 234024484.0  2554  0.936
    : 234024485.0  2250  0.918
    : 234024486.0  2441  0.947
    : 234024487.0  2480  0.920
    : 234024488.0  2341  0.917
    : 234024489.0  2567  0.944
    : 234024491.0  2076  0.829
    : 234024492.0  3654  0.949
    : 234024496.0  2954  0.904
    : 234024497.0  2492  0.912
    : 234024498.0  2401  0.902
    : 234024500.0  2645  0.837
    : 234024501.0  2559  0.915
    : 234024502.0  2080  0.868
    : 234024506.0  2714  0.875
    : 234024511.0  2601  0.861
    : 234042783.0  2477  0.761
    : 234042784.0  2504  0.906
    : 234050383.0  3435  0.987
    : 234050384.0  2183  0.873
    : 234050684.0  2114  0.835
    : 234050687.0  2296  0.884
    : 234058243.0  2629  0.867
    : 234058244.0  2375  0.924
    : 234058245.0  2584  0.927
    : 234058246.0  2208  0.911
    : 234058247.0  2193  0.893
    : 234058248.0  2716  0.954
    : 234058249.0  2698  0.964
    : 234058250.0  2820  0.968
    : 234058251.0  2396  0.954
    : 234058252.0  2606  0.959
    : 234058315.0  2082  0.842
    : 234058394.0  2047  0.834
    : 234058396.0  2650  0.879
    : 234058420.0  2209  0.839
    : 234058423.0  2008  0.835
    : 234058425.0  2607  0.869
    : 234058428.0  2840  0.890
    : 234058429.0  2403  0.903
    : 234058435.0  2985  0.889
    : 234058438.0  2666  0.877
    : 234058439.0  2471  0.876
    : 234058440.0  2905  0.912
    : 234058441.0  2438  0.935
    : 234058442.0  2408  0.904
    : 234058443.0  2431  0.921
    : 234058445.0  2456  0.851
    : 234058496.0  2029  0.827
    : 234058498.0  2257  0.835
    : 234058499.0  2056  0.823
    : 234058500.0  2024  0.809
    : 234058503.0  2065  0.847
    : 234058504.0  2068  0.853
    : 234058505.0  3198  0.908
    : 234058506.0  2176  0.892
    : 234058507.0  2539  0.891
    : 234058508.0  2577  0.893
    : 234058509.0  2072  0.857
    : 234058511.0  2204  0.866
    : 234058512.0  2240  0.882
    : 234058513.0  2321  0.896
    : 234058514.0  2601  0.892
    : 234058515.0  2139  0.876
    : 234058516.0  2116  0.870
    : 234058518.0  2368  0.910
    : 234058519.0  2273  0.888
    : 234058520.0  2334  0.892
    : 234058521.0  2218  0.867
    : 234058528.0  2165  0.850
    : 234058529.0  2032  0.858
    : 234058534.0  2135  0.842
    : 234058538.0  3064  0.899
    : 234058539.0  2525  0.919
    Total number of 1 second bins: 39995
    Bins with >0 counts          : 35401
    Bins with >2000 counts       : 90
    90 of 90 high count rate bins were dominated by noise
    Noise dominated 0.23% of total time, 0.25% of detector on time (defined as non-zero counts)


Locating noise-dominated data in quadrant 2
    : Time   totcounts   fraction
    : 234022695.0  2936  0.868
    : 234022696.0  2443  0.958
    : 234022698.0  2229  0.815
    : 234023538.0  2297  0.813
    : 234023546.0  2045  0.735
    : 234023547.0  2408  0.960
    : 234023548.0  2037  0.824
    : 234023549.0  2056  0.864
    : 234023552.0  2399  0.922
    : 234023555.0  2198  0.912
    : 234028194.0  2316  0.857
    : 234038404.0  2800  0.931
    : 234038406.0  2337  0.871
    : 234055575.0  2888  0.848
    Total number of 1 second bins: 39995
    Bins with >0 counts          : 35403
    Bins with >2000 counts       : 14
    14 of 14 high count rate bins were dominated by noise
    Noise dominated 0.04% of total time, 0.04% of detector on time (defined as non-zero counts)


Locating noise-dominated data in quadrant 3
    : Time   totcounts   fraction
    : 234022422.0  2718  0.892
    : 234022423.0  2437  0.884
    : 234022430.0  2616  0.866
    : 234022432.0  3264  0.923
    : 234022437.0  2711  0.871
    : 234022487.0  2432  0.865
    : 234022488.0  2583  0.916
    : 234022489.0  2487  0.944
    : 234022490.0  2246  0.912
    : 234022491.0  2333  0.905
    : 234022492.0  2276  0.920
    : 234022503.0  3319  0.940
    : 234022504.0  2710  0.939
    : 234022506.0  3404  0.926
    : 234022507.0  2634  0.948
    : 234022508.0  2713  0.960
    : 234022509.0  2520  0.947
    : 234022510.0  2571  0.945
    : 234022511.0  2653  0.958
    : 234022512.0  2714  0.964
    : 234022513.0  2811  0.943
    : 234022514.0  2790  0.953
    : 234022515.0  2770  0.957
    : 234022516.0  2620  0.947
    : 234022517.0  2471  0.934
    : 234022518.0  2759  0.961
    : 234022519.0  2745  0.965
    : 234022520.0  2582  0.959
    : 234022521.0  2542  0.952
    : 234022523.0  2259  0.965
    : 234022524.0  2396  0.981
    : 234022525.0  2487  0.985
    : 234022526.0  2563  0.967
    : 234022527.0  2472  0.985
    : 234022528.0  2594  0.960
    : 234022529.0  2511  0.978
    : 234022530.0  2403  0.965
    : 234022531.0  2586  0.979
    : 234022532.0  2356  0.970
    : 234022533.0  2484  0.974
    : 234022534.0  2405  0.985
    : 234022535.0  2174  0.977
    : 234022536.0  2579  0.970
    : 234022537.0  2269  0.974
    : 234022539.0  2565  0.972
    : 234022540.0  2648  0.945
    : 234022541.0  2588  0.951
    : 234022542.0  2212  0.941
    : 234022543.0  2425  0.956
    : 234022544.0  2328  0.941
    : 234022545.0  2452  0.960
    : 234022546.0  2469  0.952
    : 234022547.0  2447  0.947
    : 234022548.0  2122  0.981
    : 234022549.0  2280  0.985
    : 234022550.0  2221  0.982
    : 234022551.0  2317  0.972
    : 234022552.0  2548  0.981
    : 234022553.0  2500  0.972
    : 234022554.0  2349  0.981
    : 234022555.0  2208  0.984
    : 234022556.0  2205  0.983
    : 234022557.0  2183  0.969
    : 234022559.0  2098  0.978
    : 234022560.0  2153  0.974
    : 234022561.0  2139  0.975
    : 234022562.0  2247  0.984
    : 234022563.0  2402  0.951
    : 234022564.0  2788  0.981
    : 234022565.0  2349  0.982
    : 234022566.0  2631  0.970
    : 234022567.0  2746  0.987
    : 234022568.0  2409  0.969
    : 234022573.0  3328  0.949
    : 234022582.0  3215  0.898
    : 234022588.0  2030  0.846
    : 234022590.0  2638  0.879
    : 234022591.0  2128  0.874
    : 234022592.0  2762  0.897
    : 234022603.0  2793  0.889
    : 234022605.0  2427  0.860
    : 234022606.0  2615  0.933
    : 234022607.0  2470  0.937
    : 234022608.0  2214  0.948
    : 234022609.0  2138  0.907
    : 234022613.0  2043  0.839
    : 234022614.0  2181  0.880
    : 234022616.0  2169  0.852
    : 234022619.0  2160  0.809
    : 234022622.0  2229  0.847
    : 234022623.0  2640  0.872
    : 234022630.0  2683  0.889
    : 234022632.0  2885  0.887
    : 234022633.0  2053  0.868
    : 234022648.0  2126  0.818
    : 234022666.0  2362  0.856
    : 234022712.0  3050  0.897
    : 234022943.0  2612  0.881
    : 234022944.0  2579  0.906
    : 234022946.0  2751  0.881
    : 234022947.0  2249  0.938
    : 234022948.0  2319  0.956
    : 234023184.0  2604  0.867
    : 234023185.0  2602  0.902
    : 234023295.0  2130  0.828
    : 234023296.0  2256  0.866
    : 234023298.0  2098  0.843
    : 234023302.0  2322  0.864
    : 234023316.0  2289  0.853
    : 234023639.0  2145  0.852
    : 234023683.0  2508  0.849
    : 234023684.0  2343  0.919
    : 234023686.0  2801  0.913
    : 234023687.0  2004  0.871
    : 234023778.0  2010  0.841
    : 234023779.0  2109  0.901
    : 234023780.0  2544  0.938
    : 234023781.0  2364  0.919
    : 234023784.0  2070  0.834
    : 234023789.0  2161  0.875
    : 234023791.0  2095  0.840
    : 234023792.0  2004  0.853
    : 234023798.0  2256  0.787
    : 234023799.0  2093  0.905
    : 234023800.0  2134  0.955
    : 234023801.0  2265  0.951
    : 234023802.0  2229  0.917
    : 234023803.0  2049  0.866
    : 234023804.0  2414  0.911
    : 234023805.0  2332  0.942
    : 234023806.0  2253  0.937
    : 234023807.0  2311  0.934
    : 234023808.0  2250  0.906
    : 234023809.0  2324  0.868
    : 234023810.0  2281  0.848
    : 234023819.0  2411  0.779
    : 234023822.0  2063  0.777
    : 234024606.0  2129  0.843
    : 234025186.0  2195  0.857
    : 234025273.0  2341  0.869
    : 234025276.0  2090  0.821
    : 234025277.0  2532  0.893
    : 234025278.0  2583  0.978
    : 234025279.0  2336  0.908
    : 234026243.0  3273  0.921
    : 234026517.0  2326  0.810
    : 234026996.0  2496  0.880
    : 234027000.0  2524  0.879
    : 234027429.0  2209  0.862
    : 234027433.0  2462  0.863
    : 234027434.0  2461  0.895
    : 234027471.0  2951  0.916
    : 234027491.0  2142  0.861
    : 234027492.0  2175  0.869
    : 234027495.0  2037  0.831
    : 234027496.0  2018  0.855
    : 234027497.0  2981  0.910
    : 234027498.0  2010  0.850
    : 234027499.0  2068  0.856
    : 234027505.0  2236  0.872
    : 234027508.0  2546  0.895
    : 234027510.0  2619  0.893
    : 234027511.0  2272  0.884
    : 234027514.0  2114  0.872
    : 234027522.0  2058  0.858
    : 234027523.0  2806  0.888
    : 234027530.0  2090  0.850
    : 234027533.0  2910  0.905
    : 234027534.0  2417  0.914
    : 234027535.0  2135  0.854
    : 234027537.0  2039  0.839
    : 234027538.0  2365  0.876
    : 234027539.0  2057  0.841
    : 234027540.0  2020  0.874
    : 234027542.0  3686  0.934
    : 234027543.0  2562  0.945
    : 234027544.0  2551  0.949
    : 234027545.0  2670  0.939
    : 234027546.0  2646  0.951
    : 234027547.0  2353  0.918
    : 234027548.0  2823  0.922
    : 234027549.0  2353  0.925
    : 234027550.0  2941  0.914
    : 234027551.0  2071  0.890
    : 234027552.0  2198  0.880
    : 234027553.0  2539  0.903
    : 234027554.0  2100  0.930
    : 234027555.0  2718  0.937
    : 234027556.0  2691  0.944
    : 234027558.0  2205  0.859
    : 234027559.0  2446  0.894
    : 234027564.0  2335  0.860
    : 234027578.0  2064  0.825
    : 234027580.0  2178  0.866
    : 234027581.0  2510  0.864
    : 234027601.0  2117  0.871
    : 234027602.0  2233  0.884
    : 234027628.0  2049  0.866
    : 234028031.0  2304  0.873
    : 234028032.0  2435  0.914
    : 234028034.0  2441  0.883
    : 234028204.0  2877  0.921
    : 234028206.0  2052  0.833
    : 234028209.0  2316  0.869
    : 234028211.0  2477  0.885
    : 234028648.0  2276  0.870
    : 234028762.0  2574  0.869
    : 234028905.0  2123  0.844
    : 234028934.0  2108  0.836
    : 234028961.0  2334  0.855
    : 234029021.0  2530  0.879
    : 234029028.0  2588  0.922
    : 234029035.0  2227  0.816
    : 234029040.0  2176  0.824
    : 234029041.0  2642  0.911
    : 234029060.0  3130  0.878
    : 234029061.0  2181  0.856
    : 234029066.0  2325  0.856
    : 234029067.0  2135  0.863
    : 234029069.0  2424  0.859
    : 234029092.0  2191  0.851
    : 234029093.0  2046  0.962
    : 234029094.0  2467  0.920
    : 234029095.0  2348  0.892
    : 234029097.0  2594  0.886
    : 234029098.0  2749  0.959
    : 234029101.0  2022  0.815
    : 234029102.0  3105  0.905
    : 234029103.0  2010  0.920
    : 234029108.0  2455  0.843
    : 234029134.0  2181  0.837
    : 234029231.0  2097  0.845
    : 234030467.0  2546  0.848
    : 234030576.0  2114  0.810
    : 234030577.0  2618  0.883
    : 234030599.0  2293  0.811
    : 234030604.0  2401  0.866
    : 234030607.0  2358  0.857
    : 234030610.0  2622  0.866
    : 234030612.0  3414  0.936
    : 234030613.0  2468  0.961
    : 234030991.0  3463  0.900
    : 234030992.0  2270  0.901
    : 234031000.0  2607  0.881
    : 234031001.0  2699  0.965
    : 234031002.0  2574  0.929
    : 234031003.0  2503  0.944
    : 234031006.0  2632  0.870
    : 234031008.0  3224  0.907
    : 234031010.0  2135  0.823
    : 234031012.0  2266  0.834
    : 234031014.0  2260  0.838
    : 234031015.0  2596  0.911
    : 234031022.0  2800  0.875
    : 234031040.0  3812  0.938
    : 234031083.0  2245  0.833
    : 234031084.0  2722  0.891
    : 234031086.0  2446  0.929
    : 234031099.0  2860  0.906
    : 234031102.0  3403  0.923
    : 234031104.0  2323  0.854
    : 234031121.0  2048  0.819
    : 234031125.0  2400  0.846
    : 234031153.0  2521  0.874
    : 234031154.0  2337  0.961
    : 234031155.0  2329  0.919
    : 234031169.0  2572  0.844
    : 234031170.0  2374  0.880
    : 234031173.0  2288  0.833
    : 234031174.0  2312  0.896
    : 234031233.0  2903  0.900
    : 234031234.0  2233  0.935
    : 234031235.0  2524  0.899
    : 234031236.0  2477  0.922
    : 234031237.0  2602  0.934
    : 234031240.0  2971  0.887
    : 234031457.0  2132  0.826
    : 234031458.0  2301  0.844
    : 234031670.0  2808  0.904
    : 234031671.0  2552  0.919
    : 234031672.0  2349  0.917
    : 234032383.0  2055  0.844
    : 234033438.0  2031  0.810
    : 234033521.0  2752  0.887
    : 234033522.0  2610  0.905
    : 234034411.0  2273  0.853
    : 234034416.0  2490  0.878
    : 234034418.0  2637  0.886
    : 234034470.0  3593  0.933
    : 234034471.0  2045  0.892
    : 234034589.0  2753  0.904
    : 234034590.0  2037  0.876
    : 234034596.0  2279  0.890
    : 234034603.0  2126  0.844
    : 234034604.0  2204  0.837
    : 234034605.0  2938  0.899
    : 234034607.0  2147  0.876
    : 234034612.0  2389  0.869
    : 234034614.0  3017  0.883
    : 234034615.0  2397  0.983
    : 234034617.0  2531  0.886
    : 234034618.0  2345  0.894
    : 234034623.0  2197  0.850
    : 234034624.0  2309  0.871
    : 234034625.0  2759  0.895
    : 234034628.0  2112  0.818
    : 234034630.0  2404  0.866
    : 234034640.0  2613  0.870
    : 234034662.0  3941  0.938
    : 234034664.0  3548  0.925
    : 234034667.0  2672  0.889
    : 234034669.0  2739  0.880
    : 234034671.0  2488  0.843
    : 234034699.0  2415  0.883
    : 234034704.0  3025  0.899
    : 234034714.0  2395  0.847
    : 234034716.0  2113  0.850
    : 234034725.0  2067  0.850
    : 234034730.0  2047  0.846
    : 234034732.0  2363  0.882
    : 234034765.0  2225  0.849
    : 234034799.0  2498  0.884
    : 234034800.0  2277  0.888
    : 234034801.0  2062  0.886
    : 234034802.0  2185  0.873
    : 234035208.0  2403  0.851
    : 234035210.0  3432  0.959
    : 234035212.0  2639  0.865
    : 234035218.0  2379  0.855
    : 234035250.0  2567  0.833
    : 234035318.0  3120  0.872
    : 234035367.0  2669  0.880
    : 234035413.0  2955  0.919
    : 234035415.0  2390  0.885
    : 234035416.0  2211  0.903
    : 234035417.0  2627  0.940
    : 234035418.0  2362  0.876
    : 234035449.0  2783  0.893
    : 234035450.0  2319  0.917
    : 234036513.0  2173  0.742
    : 234036716.0  2343  0.824
    : 234036717.0  2256  0.869
    : 234036975.0  2257  0.819
    : 234038475.0  2164  0.869
    : 234038481.0  2373  0.875
    : 234038521.0  2484  0.882
    : 234038522.0  2028  0.867
    : 234038562.0  2502  0.940
    : 234038581.0  3227  0.931
    : 234038583.0  2156  0.853
    : 234038586.0  3495  0.929
    : 234038596.0  3225  0.912
    : 234038597.0  2784  0.963
    : 234038598.0  2704  0.957
    : 234038599.0  2898  0.968
    : 234038600.0  2851  0.972
    : 234038601.0  2277  0.901
    : 234038602.0  2844  0.963
    : 234038605.0  2104  0.892
    : 234038606.0  2899  0.891
    : 234038607.0  2656  0.945
    : 234038608.0  2357  0.936
    : 234038609.0  2694  0.946
    : 234038610.0  2773  0.976
    : 234038639.0  4235  0.961
    : 234038643.0  2549  0.885
    : 234038644.0  3071  0.937
    : 234038647.0  2181  0.893
    : 234038648.0  2864  0.918
    : 234038649.0  3015  0.925
    : 234038652.0  2132  0.871
    : 234038653.0  2333  0.899
    : 234038654.0  3050  0.943
    : 234038656.0  2150  0.873
    : 234039752.0  2696  0.894
    : 234039753.0  2319  0.829
    : 234039754.0  2532  0.924
    : 234039755.0  2699  0.974
    : 234039768.0  2677  0.920
    : 234041380.0  2129  0.814
    : 234041381.0  2472  0.903
    : 234041411.0  2358  0.839
    : 234041422.0  2121  0.816
    : 234041434.0  2001  0.797
    : 234043146.0  3187  0.883
    : 234044317.0  2996  0.920
    : 234044945.0  2963  0.922
    : 234045274.0  2477  0.899
    : 234045278.0  2769  0.899
    : 234045834.0  2563  0.898
    : 234045847.0  3272  0.933
    : 234045979.0  2344  0.864
    : 234045981.0  2102  0.871
    : 234046002.0  2845  0.893
    : 234046011.0  2739  0.891
    : 234046016.0  2109  0.865
    : 234046020.0  2481  0.877
    : 234046022.0  2556  0.878
    : 234046033.0  2494  0.877
    : 234046034.0  2914  0.901
    : 234047279.0  2332  0.835
    : 234049346.0  2038  0.825
    : 234049547.0  2511  0.865
    : 234049548.0  2638  0.927
    : 234049549.0  2624  0.965
    : 234049550.0  2538  0.970
    : 234049551.0  2729  0.980
    : 234049552.0  2779  0.979
    : 234049553.0  2213  0.967
    : 234049554.0  2812  0.976
    : 234049555.0  2585  0.936
    : 234049914.0  2746  0.904
    : 234049916.0  2818  0.888
    : 234050747.0  2279  0.866
    : 234050748.0  2391  0.914
    : 234050749.0  2483  0.923
    : 234050750.0  2237  0.935
    : 234050751.0  2121  0.915
    : 234050752.0  2181  0.939
    : 234050753.0  2381  0.933
    : 234050755.0  2422  0.917
    : 234050756.0  2592  0.945
    : 234050757.0  2393  0.939
    : 234050758.0  2470  0.980
    : 234050759.0  2533  0.987
    : 234050760.0  2164  0.912
    : 234050761.0  2452  0.922
    : 234050762.0  2416  0.975
    : 234050763.0  2507  0.998
    : 234050764.0  2359  0.939
    : 234050766.0  3968  0.970
    : 234050767.0  2613  0.980
    : 234050768.0  2624  0.934
    : 234050769.0  2571  0.940
    : 234050770.0  2676  0.921
    : 234050771.0  2372  0.923
    : 234050772.0  2495  0.920
    : 234050773.0  2189  0.918
    : 234050787.0  2733  0.920
    : 234054037.0  3021  0.898
    : 234054043.0  2363  0.870
    : 234054151.0  2540  0.877
    : 234054194.0  2580  0.940
    : 234055551.0  2541  0.841
    : 234055554.0  2733  0.872
    : 234055555.0  2317  0.931
    : 234055556.0  2512  0.909
    : 234055750.0  2494  0.866
    : 234055961.0  2768  0.925
    : 234055962.0  2164  0.935
    : 234055966.0  2999  0.929
    : 234056139.0  2962  0.893
    : 234056140.0  2121  0.894
    : 234056141.0  2618  0.881
    : 234056642.0  2057  0.852
    : 234056643.0  2361  0.867
    : 234056644.0  2263  0.868
    : 234056685.0  2512  0.867
    : 234056686.0  2538  0.892
    : 234056687.0  3024  0.934
    : 234056688.0  2704  0.939
    : 234056689.0  2261  0.913
    : 234056690.0  2784  0.907
    : 234056691.0  2213  0.900
    : 234056694.0  2879  0.925
    : 234056695.0  2357  0.949
    : 234056723.0  2165  0.869
    : 234056724.0  2089  0.831
    : 234056725.0  2103  0.862
    : 234059991.0  2254  0.827
    : 234059992.0  2611  0.897
    : 234060303.0  2109  0.804
    : 234060373.0  2221  0.856
    : 234062110.0  2305  0.839
    Total number of 1 second bins: 39995
    Bins with >0 counts          : 35402
    Bins with >2000 counts       : 474
    474 of 474 high count rate bins were dominated by noise
    Noise dominated 1.19% of total time, 1.34% of detector on time (defined as non-zero counts)