ASTROSAT CZTI

Data Quality Report

Orbit 50146

Creation date: 2025-01-10T11:56:32.452503
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_003T01_9000006442_50146cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50146cztM0_level2_quad_clean.evt
Size (bytes)952,712,64072,092,160
Size908.6 MB 68.8 MB
Events in quadrant A5,388,550578,294
Events in quadrant B3,675,879676,711
Events in quadrant C13,360,973176,007
Events in quadrant D12,336,299297,046

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204582
B0154832
C0441512
D0411322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A651869510.662780%
B65191372.101549%
C6519478673.416168%
D6518343552.700215%

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 7583 6518 489 489 6.45% 7.50%
B 7584 6519 70 70 0.92% 1.07%
C 7584 6520 4029 4029 53.12% 61.79%
D 7583 6518 3262 3262 43.02% 50.05%

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 0 98 994694 6082.51 661 645 163.4
A 10 253 389157 2377.28 661 645 163.4
A 6 250 304148 1857.11 661 645 163.4
B 4 206 157622 1100.94 681 658 142.6
B 5 185 111533 777.67 681 658 142.6
B 10 247 89697 624.51 681 658 142.6
C 4 111 7617281 76090.89 344 342 100.1
C 15 230 776706 7755.64 344 342 100.1
C 1 60 662846 6618.21 344 342 100.1
D 15 106 2679323 18194.22 512 494 147.2
D 15 168 1681226 11415.29 512 494 147.2
D 15 108 1070279 7265.83 512 494 147.2

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