ASTROSAT CZTI

Data Quality Report

Orbit 03754

Creation date: 2024-06-27T14:33:16.356243
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/AS1G05_248T01_9000000486_03754cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03754cztM0_level2_quad_clean.evt
Size (bytes)591,402,24088,254,720
Size564.0 MB 84.2 MB
Events in quadrant A4,185,032545,454
Events in quadrant B4,265,152545,515
Events in quadrant C3,271,537543,605
Events in quadrant D5,683,841519,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174612
B0175191
C0152411
D0220461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74541401.878186%
B74541131.515965%
C7454290.389053%
D74546178.277435%

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 7739 7455 92 92 1.19% 1.23%
B 7739 7456 47 47 0.61% 0.63%
C 7739 7456 3 3 0.04% 0.04%
D 7739 7456 571 571 7.38% 7.66%

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 13 251 347145 1996.7 841 820 173.4
A 0 118 285660 1642.21 841 820 173.4
A 8 15 131991 756.25 841 820 173.4
B 15 204 272707 1634.5 854 832 166.3
B 5 70 183580 1098.68 854 832 166.3
B 4 81 139673 834.71 854 832 166.3
C 12 4 15100 73.59 825 827 194.0
C 1 16 13970 67.76 825 827 194.0
C 9 144 11741 56.27 825 827 194.0
D 1 20 1586369 8275.72 792 769 191.6
D 8 112 523742 2729.55 792 769 191.6
D 10 85 181126 941.34 792 769 191.6

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
Veto Counter