ASTROSAT CZTI

Data Quality Report

Orbit 23915

Creation date: 2024-06-27T19:00:02.689175
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_142T01_9000003540_23915cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23915cztM0_level2_quad_clean.evt
Size (bytes)545,880,96089,838,720
Size520.6 MB 85.7 MB
Events in quadrant A3,407,210576,227
Events in quadrant B3,535,804582,422
Events in quadrant C3,809,158548,019
Events in quadrant D5,314,731535,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143392
B0146512
C0154232
D0205392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68591211.764106%
B68591552.259805%
C68592083.032512%
D68592894.213442%

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 8825 6861 0 0 0.00% 0.00%
B 8825 6861 5 5 0.06% 0.07%
C 8825 6861 27 27 0.31% 0.39%
D 8825 6861 135 135 1.53% 1.97%

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 12216 64.27 883 866 176.6
A 0 226 7821 39.38 883 866 176.6
A 3 137 7530 37.73 883 866 176.6
B 15 33 52692 309.9 878 858 167.3
B 12 111 19195 109.63 878 858 167.3
B 11 111 16812 95.38 878 858 167.3
C 10 9 225235 1157.65 830 835 193.8
C 0 10 147296 755.58 830 835 193.8
C 14 238 129970 666.19 830 835 193.8
D 8 195 1023496 4954.22 845 820 206.4
D 1 52 709319 3432.23 845 820 206.4
D 12 218 277015 1337.99 845 820 206.4

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