ASTROSAT CZTI

Data Quality Report

Orbit 24694

Creation date: 2024-06-27T19:08:50.777055
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/AS1T03_191T01_9000003618_24694cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24694cztM0_level2_quad_clean.evt
Size (bytes)550,641,600139,265,280
Size525.1 MB 132.8 MB
Events in quadrant A3,262,036992,850
Events in quadrant B3,604,105985,555
Events in quadrant C3,448,988935,064
Events in quadrant D5,937,747868,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135501
B0146071
C0142671
D0219901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242741.185517%
B6242951.521948%
C62431031.649848%
D624390414.480218%

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 7557 6242 0 0 0.00% 0.00%
B 7557 6242 10 10 0.13% 0.16%
C 7558 6243 0 0 0.00% 0.00%
D 7557 6243 772 772 10.22% 12.37%

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 13 254 10286 56.42 845 830 167.6
A 0 226 7454 39.53 845 830 167.6
A 3 137 6767 35.43 845 830 167.6
B 4 80 300996 1976.84 819 803 151.9
B 0 190 83579 545.1 819 803 151.9
B 0 189 23992 152.71 819 803 151.9
C 7 247 218126 1204.38 788 795 180.5
C 14 238 131042 721.79 788 795 180.5
C 4 175 11969 61.92 788 795 180.5
D 1 52 2387715 12924.28 769 748 184.7
D 8 195 519957 2811.27 769 748 184.7
D 12 233 37667 199.9 769 748 184.7

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