ASTROSAT CZTI

Data Quality Report

Orbit 54413

Creation date: 2025-10-19T08:59:56.140858
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_126T19_9000006518_54413cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54413cztM0_level2_quad_clean.evt
Size (bytes)632,577,60086,592,960
Size603.3 MB 82.6 MB
Events in quadrant A2,882,747629,564
Events in quadrant B3,040,564678,895
Events in quadrant C6,039,019518,524
Events in quadrant D10,949,703342,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136732
B0139072
C0226462
D0370382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6488260.400740%
B6488410.631936%
C6488112217.293465%
D6488284643.865598%

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 7613 6488 7 7 0.09% 0.11%
B 7613 6489 15 15 0.20% 0.23%
C 7613 6488 1100 1100 14.45% 16.95%
D 7613 6489 2914 2914 38.28% 44.91%

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 7 206 83226 479.46 689 671 172.2
A 11 31 46822 268.03 689 671 172.2
A 5 243 29042 164.77 689 671 172.2
B 0 171 122453 823.01 687 663 148.0
B 10 247 97759 656.13 687 663 148.0
B 0 213 52182 348.14 687 663 148.0
C 1 241 3267122 18980.21 626 622 172.1
C 4 5 93991 542.53 626 622 172.1
C 14 254 88301 509.46 626 622 172.1
D 8 176 5130632 34398.28 517 493 149.1
D 15 108 2252443 15099.63 517 493 149.1
D 7 70 735403 4927.67 517 493 149.1

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