ASTROSAT CZTI

Data Quality Report

Orbit 52996

Creation date: 2025-07-16T10:06:56.286488
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/AS1A13_003T01_9000006486_52996cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52996cztM0_level2_quad_clean.evt
Size (bytes)1,076,244,48086,132,160
Size1.0 GB 82.1 MB
Events in quadrant A16,020,632256,720
Events in quadrant B4,292,892777,086
Events in quadrant C7,584,875578,212
Events in quadrant D11,348,835462,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0528752
B0180350
C0279210
D0389990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7659534569.787178%
B76601862.428198%
C7660130917.088773%
D7660267634.934726%

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 7659 7659 4606 4606 60.14% 60.14%
B 7660 7660 93 93 1.21% 1.21%
C 7660 7660 1121 1121 14.63% 14.63%
D 7660 7660 2079 2079 27.14% 27.14%

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 9 191 10417421 82168.57 505 493 126.8
A 15 190 1642454 12951.76 505 493 126.8
A 7 206 1168323 9211.82 505 493 126.8
B 10 63 380771 2156.78 815 785 176.2
B 10 254 252121 1426.57 815 785 176.2
B 10 247 104002 585.85 815 785 176.2
C 12 254 2436674 12153.76 737 729 200.4
C 15 148 823722 4106.19 737 729 200.4
C 15 149 285878 1422.71 737 729 200.4
D 2 62 7073479 35730.72 689 658 197.9
D 8 176 171240 861.75 689 658 197.9
D 11 176 148121 744.96 689 658 197.9

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