ASTROSAT CZTI

Data Quality Report

Orbit 53387

Creation date: 2025-08-11T08:00:47.786067
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/AS1C09_011T09_9000006494_53387cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53387cztM0_level2_quad_clean.evt
Size (bytes)877,129,92099,734,400
Size836.5 MB 95.1 MB
Events in quadrant A4,593,904758,842
Events in quadrant B6,699,647713,905
Events in quadrant C15,572,467318,154
Events in quadrant D4,986,191676,390

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194722
B0256842
C0516962
D0207603

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79511591.999748%
B7951115614.539052%
C7951483760.835115%
D79503123.924528%

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 8646 7953 72 72 0.83% 0.91%
B 8646 7953 628 628 7.26% 7.90%
C 8646 7951 4355 4355 50.37% 54.77%
D 8645 7952 219 219 2.53% 2.75%

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 15 174 299610 1415.96 845 823 211.0
A 8 247 213855 1009.57 845 823 211.0
A 14 254 184067 868.4 845 823 211.0
B 4 206 1898870 11144.14 804 773 170.3
B 4 171 582401 3414.87 804 773 170.3
B 8 234 227543 1331.42 804 773 170.3
C 15 178 8440948 50340.03 603 595 167.7
C 1 241 2238269 13345.95 603 595 167.7
C 15 224 1746088 10410.48 603 595 167.7
D 2 249 564599 2438.9 818 783 231.2
D 3 12 528258 2281.7 818 783 231.2
D 2 153 268651 1158.72 818 783 231.2

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