ASTROSAT CZTI

Data Quality Report

Orbit 37251

Creation date: 2024-06-27T21:37:28.390959
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/AS1T04_087T01_9000005292_37251cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37251cztM0_level2_quad_clean.evt
Size (bytes)468,221,76083,456,640
Size446.5 MB 79.6 MB
Events in quadrant A3,727,120527,051
Events in quadrant B3,048,191547,169
Events in quadrant C3,525,275524,797
Events in quadrant D3,474,611511,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149453
B0129052
C0141302
D0144382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59622383.991949%
B5962250.419322%
C59621262.113385%
D5962631.056692%

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 7246 5963 200 200 2.76% 3.35%
B 7246 5963 5 5 0.07% 0.08%
C 7246 5963 104 104 1.44% 1.74%
D 7246 5963 57 57 0.79% 0.96%

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 15 237 769828 5666.13 671 658 135.7
A 10 83 289069 2124.59 671 658 135.7
A 13 248 51096 371.55 671 658 135.7
B 0 230 123438 931.89 680 662 131.7
B 0 190 96716 729.07 680 662 131.7
B 5 255 27377 202.77 680 662 131.7
C 1 23 315144 2018.56 659 663 155.8
C 15 214 250972 1606.66 659 663 155.8
C 14 254 225078 1440.45 659 663 155.8
D 13 171 389302 2401.85 663 644 161.8
D 12 218 121203 745.03 663 644 161.8
D 2 153 101870 625.56 663 644 161.8

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