bamtools stats output
I have merged 200 bam files using bamtools. When I use bamtools stats options on the merged bam file, I get 117% each for forward strands and reverser strands. why would that happen? it should be 50% for both strands.
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Stats for BAM file(s):
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Total reads: 3158957612
Mapped reads: 3158957612 (100%)
Forward strand: 3726962454 (117.981%)
Reverse strand: 3726962454 (117.981%)
Failed QC: 0 (0%)
Duplicates: 0 (0%)
Paired-end reads: 3158957612 (100%)
'Proper-pairs': 3158957612 (100%)
Both pairs mapped: 3158957612 (100%)
Read 1: 3726962454
Read 2: 3726962454
Singletons: 0 (0%)
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