ASTROSAT CZTI

Data Quality Report

Orbit 20151019_P01_162T09_9000000042_level2

Creation date: 2016-09-06T18:00:20.700507
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1P01_162T09_9000000042cztM0_level2_bc.evt modeM0/AS1P01_162T09_9000000042cztM0_level2_quad_clean.evt
Size (bytes)3,443,627,5201,016,867,520
Size3.2 GB 969.8 MB
Events in quadrant A22,052,8426,098,365
Events in quadrant B29,050,2286,108,723
Events in quadrant C21,372,0386,114,130
Events in quadrant D25,291,1425,909,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04203690
B04356720
C03877320
D03826490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05380
B05380
C05380
D05380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019600
B019600
C019600
D019600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A958478960.934823%
B9584711061.153922%
C958472060.214926%
D958479000.938997%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 149401 95847 142 142 0.10% 0.15%
B 149401 95847 205 205 0.14% 0.21%
C 149401 95847 61 61 0.04% 0.06%
D 149401 95848 373 373 0.25% 0.39%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 127 2334186 2835.75 3947 3860 821.8
A 12 236 1090488 1322.31 3947 3860 821.8
A 0 69 967508 1172.65 3947 3860 821.8
B 2 2 8102585 11191.85 4031 3900 723.6
B 0 220 952472 1310.86 4031 3900 723.6
B 4 67 499332 684.65 4031 3900 723.6
C 1 1 2046540 2425.21 3932 3850 842.3
C 9 204 1531980 1814.29 3932 3850 842.3
C 5 234 1051656 1244.02 3932 3850 842.3
D 4 114 2903029 3334.02 3914 3796 869.6
D 2 72 1000340 1145.99 3914 3796 869.6
D 9 82 782262 895.21 3914 3796 869.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
Veto Counter