ASTROSAT CZTI

Data Quality Report

Orbit 03675

Creation date: 2024-06-27T14:32:21.063216
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_201T01_9000000478_03675cztM0_level2.evt modeM0/AS1G05_201T01_9000000478_03675cztM0_level2_quad_clean.evt
Size (bytes)457,574,40077,705,280
Size436.4 MB 74.1 MB
Events in quadrant A3,351,300485,950
Events in quadrant B3,768,435484,457
Events in quadrant C3,098,624474,588
Events in quadrant D3,204,933462,063

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140533
B0151742
C0133792
D0138572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63831422.224659%
B63831862.913990%
C6383891.394329%
D63831372.146326%

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 7568 6383 8 8 0.11% 0.13%
B 7568 6383 53 53 0.70% 0.83%
C 7568 6383 5 5 0.07% 0.08%
D 7568 6383 35 35 0.46% 0.55%

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 13 164 109306 663.92 807 790 163.4
A 0 50 51673 311.31 807 790 163.4
A 13 251 51090 307.74 807 790 163.4
B 14 167 238989 1537.14 807 788 155.0
B 15 204 199744 1283.89 807 788 155.0
B 4 81 72229 461.02 807 788 155.0
C 1 16 36136 197.64 769 773 178.9
C 12 4 19131 102.6 769 773 178.9
C 9 247 17172 91.65 769 773 178.9
D 13 223 115102 612.46 777 755 186.7
D 14 34 31007 162.04 777 755 186.7
D 10 34 26306 136.86 777 755 186.7

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
Veto Counter