ASTROSAT CZTI

Data Quality Report

Orbit 52080

Creation date: 2025-05-15T08:18:25.034420
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_011T07_9000006470_52080cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52080cztM0_level2_quad_clean.evt
Size (bytes)1,227,081,60078,168,960
Size1.1 GB 74.5 MB
Events in quadrant A4,111,433694,731
Events in quadrant B9,323,884643,154
Events in quadrant C11,062,764497,563
Events in quadrant D20,340,7713,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177630
B0331070
C0381350
D0656570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7574971.280697%
B7573142918.869669%
C7573254433.593028%
D7573754199.577446%

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 7574 7574 82 82 1.08% 1.08%
B 7572 7572 1104 1104 14.58% 14.58%
C 7573 7573 2414 2414 31.88% 31.88%
D 7572 7572 7490 7490 98.92% 98.92%

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 6 196 281359 1427.42 776 757 196.6
A 4 3 91665 462.45 776 757 196.6
A 3 95 91634 462.29 776 757 196.6
B 10 128 2050175 13049.54 736 711 157.1
B 10 254 1792205 11406.97 736 711 157.1
B 5 172 1321996 8413.01 736 711 157.1
C 15 224 5278209 28703.37 664 659 183.9
C 15 193 1182090 6425.53 664 659 183.9
C 2 239 482934 2622.98 664 659 183.9
D 15 94 19188754 541950.09 116 110 35.4
D 6 42 171546 4841.91 116 110 35.4
D 3 12 157002 4431.14 116 110 35.4

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