ASTROSAT CZTI

Data Quality Report

Orbit 54187

Creation date: 2025-10-04T04:12:55.994983
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_012T01_9000006512_54187cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54187cztM0_level2_quad_clean.evt
Size (bytes)541,244,160105,986,880
Size516.2 MB 101.1 MB
Events in quadrant A4,869,813701,898
Events in quadrant B4,210,101757,645
Events in quadrant C6,195,263586,435
Events in quadrant D4,170,518635,202

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200890
B0180340
C0240301
D0178720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75862373.124176%
B75861652.175059%
C7586114915.146322%
D75861421.871869%

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 7586 7586 170 170 2.24% 2.24%
B 7586 7586 104 104 1.37% 1.37%
C 7586 7586 955 955 12.59% 12.59%
D 7586 7586 119 119 1.57% 1.57%

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 774481 3918.97 789 770 197.4
A 4 5 420563 2126.32 789 770 197.4
A 3 130 163303 823.26 789 770 197.4
B 4 171 462791 2745.27 783 756 168.3
B 15 20 182056 1077.23 783 756 168.3
B 5 236 108074 637.65 783 756 168.3
C 15 177 1204485 6050.73 720 715 198.9
C 15 215 1119974 5625.93 720 715 198.9
C 15 216 467238 2344.97 720 715 198.9
D 8 176 464303 2144.94 768 736 216.1
D 11 176 197671 911.22 768 736 216.1
D 3 12 160236 738.01 768 736 216.1

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