ASTROSAT CZTI

Data Quality Report

Orbit 53109

Creation date: 2025-07-24T14:55:39.881604
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_9000006488_53109cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53109cztM0_level2_quad_clean.evt
Size (bytes)757,794,24086,051,520
Size722.7 MB 82.1 MB
Events in quadrant A10,206,984452,219
Events in quadrant B4,128,655665,474
Events in quadrant C7,985,310489,189
Events in quadrant D5,218,880537,828

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349001
B0169351
C0284621
D0204251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6608228334.549031%
B66082944.449153%
C6609167225.298835%
D66096309.532456%

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 7533 6608 1946 1946 25.83% 29.45%
B 7533 6608 110 110 1.46% 1.66%
C 7534 6609 1456 1456 19.33% 22.03%
D 7534 6609 458 458 6.08% 6.93%

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 6894804 43555.99 620 607 158.3
A 12 80 291688 1838.98 620 607 158.3
A 4 249 210312 1324.87 620 607 158.3
B 10 254 433388 2971.74 680 658 145.6
B 2 249 259635 1778.51 680 658 145.6
B 10 28 169825 1161.74 680 658 145.6
C 15 224 2421016 13930.18 610 601 173.8
C 15 157 1102032 6339.05 610 601 173.8
C 1 241 804809 4628.44 610 601 173.8
D 12 3 1184786 6178.49 654 625 191.7
D 10 172 705719 3678.9 654 625 191.7
D 3 12 214182 1114.26 654 625 191.7

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