ASTROSAT CZTI

Data Quality Report

Orbit 20171215_A04_082T01_9000001772_level2

Creation date: 2017-12-21T10:33:35.286218
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/AS1A04_082T01_9000001772cztM0_level2.evt modeM0/AS1A04_082T01_9000001772cztM0_level2_quad_clean.evt
Size (bytes)9,479,638,0801,639,134,720
Size8.8 GB 1.5 GB
Events in quadrant A62,510,83510,538,258
Events in quadrant B78,132,47010,422,321
Events in quadrant C56,154,26310,406,192
Events in quadrant D81,967,6319,811,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02690810
B03137050
C02546730
D03268250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025160
B025160
C025160
D025160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12358620791.682229%
B12358667455.457738%
C12358611490.929717%
D12358667905.494150%

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 140623 123593 141 141 0.10% 0.11%
B 140623 123591 3711 3711 2.64% 3.00%
C 140623 123596 7 7 0.00% 0.01%
D 140623 123594 5327 5327 3.79% 4.31%

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 1 162 2487881 854.54 14425 14130 2894.8
A 1 178 1304940 445.9 14425 14130 2894.8
A 1 161 1142762 389.88 14425 14130 2894.8
B 4 239 14649972 5449.5 14314 13953 2685.8
B 3 64 2713185 1005.02 14314 13953 2685.8
B 15 204 1622339 598.86 14314 13953 2685.8
C 8 208 1348195 414.62 14037 14089 3217.6
C 13 61 103576 27.81 14037 14089 3217.6
C 14 234 69653 17.27 14037 14089 3217.6
D 1 52 19776403 6081.35 13655 13289 3249.8
D 8 195 3779331 1158.86 13655 13289 3249.8
D 13 104 1547378 472.06 13655 13289 3249.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter