ASTROSAT CZTI

Data Quality Report

Orbit 53744

Creation date: 2025-09-04T08:01:54.688472
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_022T04_9000006506_53744cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53744cztM0_level2_quad_clean.evt
Size (bytes)953,202,24074,583,360
Size909.0 MB 71.1 MB
Events in quadrant A16,532,06892,278
Events in quadrant B3,275,540682,209
Events in quadrant C8,803,030460,953
Events in quadrant D6,153,080553,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537632
B0146792
C0308217
D0230222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6729600189.181156%
B67291061.575271%
C6728192328.582045%
D67285267.818074%

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 7798 6728 5915 5915 75.85% 87.92%
B 7799 6730 42 42 0.54% 0.62%
C 7797 6728 1632 1632 20.93% 24.26%
D 7798 6729 482 482 6.18% 7.16%

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 13005251 141010.06 367 358 92.2
A 3 78 1855350 20113.39 367 358 92.2
A 8 249 87605 946.01 367 358 92.2
B 5 185 109773 730.79 700 676 149.3
B 4 81 106344 707.82 700 676 149.3
B 4 171 96073 639.02 700 676 149.3
C 15 224 4668776 28749.22 590 583 162.4
C 1 241 1475859 9085.53 590 583 162.4
C 15 147 52884 322.1 590 583 162.4
D 2 172 2097376 10911.56 670 641 192.2
D 2 37 420908 2187.1 670 641 192.2
D 3 224 209067 1084.66 670 641 192.2

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