ASTROSAT CZTI

Data Quality Report

Orbit 23099

Creation date: 2024-06-27T18:49:44.365401
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/AS1A07_049T01_9000003408_23099cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23099cztM0_level2_quad_clean.evt
Size (bytes)595,604,16084,703,680
Size568.0 MB 80.8 MB
Events in quadrant A3,138,194568,435
Events in quadrant B2,984,909589,466
Events in quadrant C3,486,026562,418
Events in quadrant D8,021,061423,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130822
B0126321
C0141011
D0279111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6016270.448803%
B6017470.781120%
C60171903.157720%
D6017186430.978893%

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 7231 6017 5 5 0.07% 0.08%
B 7232 6018 3 3 0.04% 0.05%
C 7232 6018 77 77 1.06% 1.28%
D 7232 6017 1723 1723 23.82% 28.64%

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 6 16 233782 1556.72 751 736 149.7
A 13 254 9378 57.73 751 736 149.7
A 3 137 6415 37.94 751 736 149.7
B 4 216 19432 132.49 753 736 141.1
B 0 190 16713 113.22 753 736 141.1
B 12 111 16636 112.67 753 736 141.1
C 0 207 435486 2558.4 729 734 169.9
C 14 238 114836 671.46 729 734 169.9
C 0 10 44663 258.51 729 734 169.9
D 1 52 4773273 32071.62 610 592 148.8
D 13 172 362180 2429.81 610 592 148.8
D 12 233 275207 1845.37 610 592 148.8

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