ASTROSAT CZTI

Data Quality Report

Orbit 17412

Creation date: 2024-06-27T17:36:11.996991
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/AS1A05_182T03_9000002576_17412cztM0_level2.evt modeM0/AS1A05_182T03_9000002576_17412cztM0_level2_quad_clean.evt
Size (bytes)531,469,440105,436,800
Size506.8 MB 100.6 MB
Events in quadrant A2,997,359740,912
Events in quadrant B3,129,461736,549
Events in quadrant C3,061,612686,929
Events in quadrant D6,509,770618,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124771
B0128441
C0123911
D0233681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5858631.075452%
B5859611.041133%
C5859661.126472%
D5859103517.665131%

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 7198 5859 1 1 0.01% 0.02%
B 7199 5861 5 5 0.07% 0.09%
C 7199 5861 0 0 0.00% 0.00%
D 7199 5861 933 933 12.96% 15.92%

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 7039 40.76 778 763 154.0
A 0 226 6964 40.27 778 763 154.0
A 12 194 5889 33.29 778 763 154.0
B 0 197 45065 313.58 764 749 141.3
B 4 216 43984 305.93 764 749 141.3
B 0 230 39782 276.2 764 749 141.3
C 14 238 115578 690.54 725 730 166.3
C 5 218 64394 382.79 725 730 166.3
C 5 219 31272 183.64 725 730 166.3
D 11 176 3424968 20138.21 709 690 170.0
D 13 189 141713 829.36 709 690 170.0
D 13 232 123939 724.83 709 690 170.0

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