ASTROSAT CZTI

Data Quality Report

Orbit 55328

Creation date: 2025-12-20T14:19:06.545151
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_009T01_9000006534_55328cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55328cztM0_level2_quad_clean.evt
Size (bytes)439,882,560100,373,760
Size419.5 MB 95.7 MB
Events in quadrant A4,636,490640,123
Events in quadrant B3,398,988701,929
Events in quadrant C3,393,852630,469
Events in quadrant D4,327,121594,844

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185612
B0151292
C0151922
D0175552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67713865.700783%
B67711632.407325%
C6771871.284891%
D67711942.865160%

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 7866 6772 298 298 3.79% 4.40%
B 7866 6772 78 78 0.99% 1.15%
C 7866 6772 64 64 0.81% 0.95%
D 7866 6772 194 194 2.47% 2.86%

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 78 1035784 5940.14 714 699 174.3
A 0 8 492561 2822.69 714 699 174.3
A 3 14 123963 707.39 714 699 174.3
B 5 185 174153 1139.21 709 685 152.3
B 10 247 152635 997.89 709 685 152.3
B 0 199 141994 928.01 709 685 152.3
C 7 64 357905 1838.05 706 698 194.3
C 13 3 145157 743.33 706 698 194.3
C 14 254 26450 132.51 706 698 194.3
D 7 96 517521 2581.33 708 678 200.2
D 11 176 389238 1940.63 708 678 200.2
D 11 129 337185 1680.66 708 678 200.2

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