ASTROSAT CZTI

Data Quality Report

Orbit 51567

Creation date: 2025-04-10T18:17:47.231956
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/AS1A13_037T05_9000006460_51567cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51567cztM0_level2_quad_clean.evt
Size (bytes)582,687,36091,393,920
Size555.7 MB 87.2 MB
Events in quadrant A7,518,971549,560
Events in quadrant B5,086,348639,051
Events in quadrant C3,605,738599,412
Events in quadrant D4,869,136539,351

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267040
B0193370
C0150670
D0188140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6308103016.328472%
B63096099.652877%
C63092153.407830%
D63094667.386274%

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 7363 6309 645 645 8.76% 10.22%
B 7364 6310 358 358 4.86% 5.67%
C 7364 6309 99 99 1.34% 1.57%
D 7364 6310 346 346 4.70% 5.48%

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 12 3 2007471 12171.57 674 656 164.9
A 7 64 1074086 6510.48 674 656 164.9
A 12 250 798537 4839.24 674 656 164.9
B 10 44 1137038 7779.49 685 660 146.1
B 4 81 319278 2181.21 685 660 146.1
B 6 51 223170 1523.27 685 660 146.1
C 13 3 410418 2151.26 693 686 190.5
C 14 245 175939 920.15 693 686 190.5
C 0 177 120676 630.0 693 686 190.5
D 8 176 698488 3746.9 675 650 186.2
D 3 12 361096 1935.34 675 650 186.2
D 12 6 203152 1087.29 675 650 186.2

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