ASTROSAT CZTI

Data Quality Report

Orbit 09018

Creation date: 2024-06-27T15:40:25.091008
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G07_033T01_9000001254_09018cztM0_level2.evt modeM0/AS1G07_033T01_9000001254_09018cztM0_level2_quad_clean.evt
Size (bytes)1,800,593,280338,538,240
Size1.7 GB 322.9 MB
Events in quadrant A15,227,9352,179,024
Events in quadrant B13,047,6362,188,224
Events in quadrant C11,001,7082,148,220
Events in quadrant D13,626,2782,079,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06062783
B05417269
C04932245
D05655964

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04882
B04880
C04880
D04880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241224431.836498%
B241256632.748187%
C241291640.679680%
D241294972.059762%

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 28994 24150 110 110 0.38% 0.46%
B 28994 24149 347 347 1.20% 1.44%
C 28994 24151 0 0 0.00% 0.00%
D 28994 24149 284 284 0.98% 1.18%

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 8 5 3162883 5461.13 2921 2865 578.6
A 3 1 396026 679.46 2921 2865 578.6
A 1 162 188013 319.97 2921 2865 578.6
B 10 16 1135290 2087.18 2912 2845 542.6
B 4 48 264572 482.38 2912 2845 542.6
B 0 214 141748 256.01 2912 2845 542.6
C 13 61 21635 29.36 2815 2827 640.5
C 14 67 8336 8.6 2815 2827 640.5
C 1 3 7785 7.74 2815 2827 640.5
D 6 225 976796 1310.32 2803 2731 743.4
D 4 95 555202 743.19 2803 2731 743.4
D 1 52 419404 560.51 2803 2731 743.4

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