ASTROSAT CZTI

Data Quality Report

Orbit 45740

Creation date: 2024-06-27T23:15:37.548962
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/AS1T05_183T01_9000006124_45740cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45740cztM0_level2_quad_clean.evt
Size (bytes)614,543,040126,869,760
Size586.1 MB 121.0 MB
Events in quadrant A7,440,938846,350
Events in quadrant B5,218,520851,267
Events in quadrant C4,434,337830,073
Events in quadrant D5,046,605766,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277352
B0206250
C0187150
D0203470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78551061.349459%
B78552833.602801%
C78552443.106302%
D78551491.896881%

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 7855 7855 36 36 0.46% 0.46%
B 7855 7855 149 149 1.90% 1.90%
C 7855 7855 185 185 2.36% 2.36%
D 7855 7855 123 123 1.57% 1.57%

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 10 83 3595044 19051.55 895 877 188.7
A 14 235 143634 756.71 895 877 188.7
A 12 189 115919 609.8 895 877 188.7
B 3 112 658648 3766.11 888 861 174.7
B 5 172 280204 1599.36 888 861 174.7
B 5 255 212217 1210.1 888 861 174.7
C 14 254 485126 2357.06 872 879 205.4
C 12 2 345359 1676.75 872 879 205.4
C 15 208 76249 366.86 872 879 205.4
D 1 52 566262 2537.21 877 849 222.8
D 13 249 253258 1132.65 877 849 222.8
D 2 249 182814 816.54 877 849 222.8

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