Open chromatin assays are known to have significant GC bias. Please take this
into consideration as necessary.
Library complexity quality metrics
Library complexity (filtered non-mito BAM)
rep1
rep2
rep3
ctl1
Total Fragments
1092689
649668
1637475
4248344
Distinct Fragments
900081
625352
1477420
4102546
Positions with Two Read
137751
20193
122878
116594
NRF = Distinct/Total
0.82373
0.962572
0.902255
0.965681
PBC1 = OneRead/Distinct
0.819667
0.96524
0.907221
0.9691
PBC2 = OneRead/TwoRead
5.355801
29.892289
10.907949
34.099319
Mitochondrial reads are filtered out by default.
The non-redundant fraction (NRF) is the fraction of non-redundant mapped reads
in a dataset; it is the ratio between the number of positions in the genome
that uniquely mapped reads map to and the total number of uniquely mappable
reads. The NRF should be > 0.8. The PBC1 is the ratio of genomic locations
with EXACTLY one read pair over the genomic locations with AT LEAST one read
pair. PBC1 is the primary measure, and the PBC1 should be close to 1.
Provisionally 0-0.5 is severe bottlenecking, 0.5-0.8 is moderate bottlenecking,
0.8-0.9 is mild bottlenecking, and 0.9-1.0 is no bottlenecking. The PBC2 is
the ratio of genomic locations with EXACTLY one read pair over the genomic
locations with EXACTLY two read pairs. The PBC2 should be significantly
greater than 1. See more details at
the ENCODE portal standard for ChIP-Seq pipeline
NRF (non redundant fraction)
PBC1 (PCR Bottleneck coefficient 1)
PBC2 (PCR Bottleneck coefficient 2)
PBC1 is the primary measure. Provisionally
0-0.5 is severe bottlenecking
0.5-0.8 is moderate bottlenecking
0.8-0.9 is mild bottlenecking
0.9-1.0 is no bottlenecking
Replication quality metrics
IDR (Irreproducible Discovery Rate) plots
Reproducibility QC and peak detection statistics
overlap
idr
Nt
4477
56
N1
4346
35
N2
3066
27
N3
6236
42
Np
3772
72
N optimal
4477
72
N conservative
4477
56
Optimal Set
rep1_vs_rep3
pooled-pr1_vs_pooled-pr2
Conservative Set
rep1_vs_rep3
rep1_vs_rep3
Rescue Ratio
1.1869034994697774
1.2857142857142858
Self Consistency Ratio
2.0339204174820615
1.5555555555555556
Reproducibility Test
borderline
pass
Reproducibility QC
N1: Replicate 1 self-consistent peaks (comparing two pseudoreplicates generated by subsampling Rep1 reads)
N2: Replicate 2 self-consistent peaks (comparing two pseudoreplicates generated by subsampling Rep2 reads)
Ni: Replicate i self-consistent peaks (comparing two pseudoreplicates generated by subsampling RepX reads)
Nt: True Replicate consistent peaks (comparing true replicates Rep1 vs Rep2)
Np: Pooled-pseudoreplicate consistent peaks (comparing two pseudoreplicates generated by subsampling pooled reads from Rep1 and Rep2)
Self-consistency Ratio: max(N1,N2) / min (N1,N2)
Rescue Ratio: max(Np,Nt) / min (Np,Nt)
Reproducibility Test: If Self-consistency Ratio >2 AND Rescue Ratio > 2, then 'Fail' else 'Pass'
Number of raw peaks
rep1
rep2
rep3
Number of peaks
24453
22093
19756
Top 300000 raw peaks from spp with FDR 0.01
Peak calling statistics
Peak region size
rep1
rep2
rep3
idr_opt
overlap_opt
Min size
211.0
749.0
166.0
126.0
126.0
25 percentile
730.0
900.0
660.0
504.0
504.0
50 percentile (median)
730.0
900.0
660.0
504.0
504.0
75 percentile
730.0
900.0
660.0
504.0
504.0
Max size
1008.0
3135.0
683.0
3010.0
3010.0
Mean
729.8701590806854
900.850767211334
659.7397752581494
699.625
507.46258655349567
Enrichment / Signal-to-noise ratio
Strand cross-correlation measures (trimmed/filtered SE BAM)
rep1
rep2
rep3
Number of Subsampled Reads
1092689
649668
1637475
Estimated Fragment Length
115
135
110
Cross-correlation at Estimated Fragment Length
0.254687694051762
0.223344363319463
0.35840999887728
Phantom Peak
35
25
30
Cross-correlation at Phantom Peak
0.2542856
0.2231028
0.356248
Argmin of Cross-correlation
1500
1500
1500
Minimum of Cross-correlation
0.2440454
0.2066885
0.3515827
NSC (Normalized Strand Cross-correlation coeff.)
1.043608
1.080584
1.019419
RSC (Relative Strand Cross-correlation coeff.)
1.039267
1.014717
1.463423
Performed on subsampled (15000000) reads mapped from FASTQs that are trimmed to 50.
Such FASTQ trimming and subsampling reads are for cross-corrleation analysis only.
Untrimmed FASTQs are used for all the other analyses.
NOTE1: For SE datasets, reads from replicates are randomly subsampled to 15000000.
NOTE2: For PE datasets, the first end (R1) of each read-pair is selected and trimmed to 50 the reads are then randomly subsampled to 15000000.
Normalized strand cross-correlation coefficient (NSC) = col9 in outFile
Relative strand cross-correlation coefficient (RSC) = col10 in outFile
Estimated fragment length = col3 in outFile, take the top value
Jensen-Shannon distance (filtered/deduped BAM)
rep1
rep2
rep3
AUC
0.32238263188042626
0.30072010591467685
0.3427500149905014
Synthetic AUC
0.48824678534009397
0.4859040548087286
0.4908236662917961
X-intercept
0.06860664142451893
0.10298277602448143
0.04959124477834655
Synthetic X-intercept
3.518527209940818e-61
2.878095080222016e-42
4.7410195073917643e-101
Elbow Point
0.5442449100100144
0.5999365621471519
0.5411986961326849
Synthetic Elbow Point
0.5162428903808125
0.5158318024868325
0.5049768129299167
JS Distance
0.09962294012404359
0.12190422514061897
0.0739627411226263
Synthetic JS Distance
0.21283300966322927
0.2220922872471032
0.19941593216650078
% Genome Enriched
41.150619017790525
38.270181416299934
36.73470609123081
Diff. Enrichment
18.27002236649877
22.150203586955808
14.809513144676888
CHANCE Divergence
0.15705753827914684
0.18999251510463674
0.12601684192214174
Peak enrichment
Fraction of reads in peaks (FRiP)
FRiP for spp raw peaks
rep1
rep2
rep3
rep1-pr1
rep2-pr1
rep3-pr1
rep1-pr2
rep2-pr2
rep3-pr2
pooled
pooled-pr1
pooled-pr2
Fraction of Reads in Peaks
0.23953209601551198
0.2522657301911009
0.1892269670747716
0.21569797282773204
0.2085964542067319
0.24114849840597957
0.21966637786380935
0.1751579517609338
0.24647975995927882
0.1376856313505462
0.1782408488705871
0.18020036224947317
FRiP for overlap peaks
rep1_vs_rep2
rep1_vs_rep3
rep2_vs_rep3
rep1-pr1_vs_rep1-pr2
rep2-pr1_vs_rep2-pr2
rep3-pr1_vs_rep3-pr2
pooled-pr1_vs_pooled-pr2
Fraction of Reads in Peaks
0.04404065139070547
0.05149880127478045
0.04929773913318087
0.05547092544397907
0.05116967582932418
0.06803453264393067
0.04507687105085174
FRiP for IDR peaks
rep1_vs_rep2
rep1_vs_rep3
rep2_vs_rep3
rep1-pr1_vs_rep1-pr2
rep2-pr1_vs_rep2-pr2
rep3-pr1_vs_rep3-pr2
pooled-pr1_vs_pooled-pr2
Fraction of Reads in Peaks
0.011292491585238443
0.012020805974941248
0.011189527536468354
0.009416425114415159
0.014059731813135329
0.006460470972754306
0.010560558650690681
For spp raw peaks:
repX: Peak from true replicate X
repX-prY: Peak from Yth pseudoreplicates from replicate X
pooled: Peak from pooled true replicates (pool of rep1, rep2, ...)
pooled-pr1: Peak from 1st pooled pseudo replicate (pool of rep1-pr1, rep2-pr1, ...)
pooled-pr2: Peak from 2nd pooled pseudo replicate (pool of rep1-pr2, rep2-pr2, ...)
For overlap/IDR peaks:
repX_vs_repY: Comparing two peaks from true replicates X and Y
repX-pr1_vs_repX-pr2: Comparing two peaks from both pseudoreplicates from replicate X
pooled-pr1_vs_pooled-pr2: Comparing two peaks from 1st and 2nd pooled pseudo replicates