ASTROSAT CZTI

Data Quality Report

Orbit 54547

Creation date: 2025-10-28T10:03:17.263767
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_127T09_9000006520_54547cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54547cztM0_level2_quad_clean.evt
Size (bytes)457,672,320103,377,600
Size436.5 MB 98.6 MB
Events in quadrant A3,415,801691,932
Events in quadrant B3,534,454739,605
Events in quadrant C5,609,555592,455
Events in quadrant D3,826,691609,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154982
B0158062
C0220318
D0167152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7131831.163932%
B71311442.019352%
C713188712.438648%
D71311772.482120%

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 9246 7133 41 41 0.44% 0.57%
B 9246 7132 28 28 0.30% 0.39%
C 9245 7132 728 728 7.87% 10.21%
D 9246 7133 137 137 1.48% 1.92%

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 11 3 223734 1152.39 780 760 193.5
A 4 3 39335 199.37 780 760 193.5
A 3 110 35271 178.36 780 760 193.5
B 8 234 113939 672.47 775 747 168.3
B 2 249 83951 494.31 775 747 168.3
B 10 247 58567 343.51 775 747 168.3
C 12 254 1329261 6797.75 709 704 195.4
C 4 5 493849 2523.25 709 704 195.4
C 1 45 411187 2100.3 709 704 195.4
D 10 181 390326 1804.25 750 716 215.9
D 6 239 129973 598.58 750 716 215.9
D 3 12 109027 501.58 750 716 215.9

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