ASTROSAT CZTI

Data Quality Report

Orbit 56600

Creation date: 2026-03-15T13:33:57.550786
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/AS1A14_083T06_9000006558_56600cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56600cztM0_level2_quad_clean.evt
Size (bytes)521,294,400110,905,920
Size497.1 MB 105.8 MB
Events in quadrant A4,199,560722,890
Events in quadrant B4,795,632777,526
Events in quadrant C4,488,501678,071
Events in quadrant D5,200,000630,751

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182830
B0198112
C0192090
D0211060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78931541.951096%
B78922773.509883%
C78922683.395844%
D78933474.396301%

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 7893 7893 134 134 1.70% 1.70%
B 7892 7892 171 171 2.17% 2.17%
C 7892 7892 299 299 3.79% 3.79%
D 7893 7893 383 383 4.85% 4.85%

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 8 306494 1474.53 831 811 207.3
A 8 249 167421 803.68 831 811 207.3
A 4 249 137710 660.36 831 811 207.3
B 5 185 1300350 7302.01 826 796 178.0
B 0 171 77535 431.19 826 796 178.0
B 4 21 50070 276.86 826 796 178.0
C 15 230 908151 4106.81 812 804 220.9
C 12 252 218109 983.56 812 804 220.9
C 6 223 73038 326.94 812 804 220.9
D 6 239 760787 3380.07 796 759 224.9
D 2 249 437598 1942.75 796 759 224.9
D 8 129 217757 965.05 796 759 224.9

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