ASTROSAT CZTI

Data Quality Report

Orbit 37038

Creation date: 2024-06-27T21:34:51.432493
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/AS1T05_044T01_9000005270_37038cztM0_level2.evt modeM0/AS1T05_044T01_9000005270_37038cztM0_level2_quad_clean.evt
Size (bytes)500,235,84089,605,440
Size477.1 MB 85.5 MB
Events in quadrant A2,910,988599,513
Events in quadrant B4,785,398572,875
Events in quadrant C3,230,128586,459
Events in quadrant D3,834,797554,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122093
B0180242
C0129872
D0150422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5721110.192274%
B57214938.617375%
C5721450.786576%
D57211492.604440%

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 7395 5722 1 1 0.01% 0.02%
B 7395 5722 423 423 5.72% 7.39%
C 7395 5722 42 42 0.57% 0.73%
D 7395 5722 135 135 1.83% 2.36%

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 10 83 268547 1954.3 675 662 137.1
A 13 6 16691 116.94 675 662 137.1
A 13 254 9155 61.96 675 662 137.1
B 0 182 786482 6360.21 645 630 123.6
B 0 213 684697 5536.42 645 630 123.6
B 0 190 371033 2997.82 645 630 123.6
C 15 214 246480 1618.91 647 652 151.8
C 0 207 239653 1573.95 647 652 151.8
C 0 10 97580 638.32 647 652 151.8
D 2 249 425243 2674.48 647 630 158.8
D 12 235 276926 1740.28 647 630 158.8
D 2 250 186617 1171.46 647 630 158.8

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