ASTROSAT CZTI

Data Quality Report

Orbit 20160915_G05_258T01_9000000666_level2

Creation date: 2017-10-18T02:38:03.694657
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/AS1G05_258T01_9000000666cztM0_level2.evt modeM0/AS1G05_258T01_9000000666cztM0_level2_quad_clean.evt
Size (bytes)2,400,284,160493,655,040
Size2.2 GB 470.8 MB
Events in quadrant A12,956,5223,396,563
Events in quadrant B13,671,7453,479,293
Events in quadrant C12,416,2443,346,126
Events in quadrant D31,741,9332,785,990

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05800
C05780
D05760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590560
B0597650
C0576650
D01142090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282713841.358282%
B282833051.078386%
C282771450.512784%
D28196647422.960704%

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 38158 28370 99 99 0.26% 0.35%
B 38158 28363 26 26 0.07% 0.09%
C 38158 28369 0 0 0.00% 0.00%
D 38157 28303 5299 5299 13.89% 18.72%

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 0 50 613431 954.55 3195 3123 639.4
A 12 194 31982 45.14 3195 3123 639.4
A 0 226 30882 43.42 3195 3123 639.4
B 4 80 612409 1001.03 3246 3171 608.6
B 4 48 174460 281.44 3246 3171 608.6
B 0 219 133773 214.59 3246 3171 608.6
C 1 16 318496 447.71 3091 3096 704.5
C 13 61 25297 31.51 3091 3096 704.5
C 8 128 16697 19.31 3091 3096 704.5
D 11 145 19666130 29315.24 2762 2673 670.8
D 13 137 585598 869.05 2762 2673 670.8
D 2 63 315061 465.72 2762 2673 670.8

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