ASTROSAT CZTI

Data Quality Report

Orbit 11715

Creation date: 2024-06-27T16:17:18.717634
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/AS1G08_075T01_9000001726_11715cztM0_level2.evt modeM0/AS1G08_075T01_9000001726_11715cztM0_level2_quad_clean.evt
Size (bytes)534,231,36093,594,240
Size509.5 MB 89.3 MB
Events in quadrant A4,412,915596,025
Events in quadrant B3,949,425598,245
Events in quadrant C3,113,316590,320
Events in quadrant D4,228,366561,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176812
B0162081
C0142381
D0170991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7007721.027544%
B70071752.497502%
C7007200.285429%
D70071401.998002%

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 7338 7009 12 12 0.16% 0.17%
B 7338 7009 73 73 0.99% 1.04%
C 7338 7009 0 0 0.00% 0.00%
D 7338 7009 93 93 1.27% 1.33%

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 8 15 993668 5915.79 816 799 167.8
A 1 162 96874 572.44 816 799 167.8
A 1 178 50504 296.16 816 799 167.8
B 4 239 378286 2412.63 812 792 156.5
B 3 64 218252 1389.82 812 792 156.5
B 15 204 106324 674.47 812 792 156.5
C 8 128 8924 43.88 794 798 185.2
C 13 61 5763 26.81 794 798 185.2
C 8 112 5455 25.15 794 798 185.2
D 8 195 409834 2133.03 789 767 191.8
D 13 137 280335 1457.77 789 767 191.8
D 7 80 242483 1260.4 789 767 191.8

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