ASTROSAT CZTI

Data Quality Report

Orbit 53416

Creation date: 2025-08-14T15:09:19.555935
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_53416cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53416cztM0_level2_quad_clean.evt
Size (bytes)884,554,560101,718,720
Size843.6 MB 97.0 MB
Events in quadrant A5,995,068717,573
Events in quadrant B6,970,855765,590
Events in quadrant C14,498,852374,089
Events in quadrant D4,675,699679,969

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234505
B0261945
C0484082
D0195942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139740174092328139736760975406
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77965196.657260%
B77967479.581837%
C7798406452.115927%
D77981632.090280%

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 7813 7798 420 420 5.38% 5.39%
B 7813 7798 432 432 5.53% 5.54%
C 7812 7797 3928 3928 50.28% 50.38%
D 7813 7799 116 116 1.48% 1.49%

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 3 63 1460986 7244.51 815 796 201.6
A 15 174 894495 4433.95 815 796 201.6
A 7 206 158967 784.74 815 796 201.6
B 0 171 1207500 7078.65 812 784 170.5
B 4 206 1022439 5993.07 812 784 170.5
B 1 223 374943 2194.83 812 784 170.5
C 1 241 7002239 45243.07 560 556 154.8
C 15 224 3597874 23244.94 560 556 154.8
C 9 38 898030 5799.25 560 556 154.8
D 0 18 521246 2271.02 809 773 229.2
D 2 153 350808 1527.34 809 773 229.2
D 2 249 159463 692.43 809 773 229.2

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