ASTROSAT CZTI

Data Quality Report

Orbit 16137

Creation date: 2024-06-27T17:18:31.324531
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/AS1T02_092T01_9000002384_16137cztM0_level2.evt modeM0/AS1T02_092T01_9000002384_16137cztM0_level2_quad_clean.evt
Size (bytes)542,681,28098,556,480
Size517.5 MB 94.0 MB
Events in quadrant A3,577,147661,817
Events in quadrant B4,063,219658,379
Events in quadrant C3,326,189619,541
Events in quadrant D5,036,054599,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147063
B0161972
C0137392
D0191292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63851742.725137%
B63852523.946750%
C63851372.145654%
D63854356.812843%

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 7566 6387 49 49 0.65% 0.77%
B 7566 6387 118 118 1.56% 1.85%
C 7566 6387 3 3 0.04% 0.05%
D 7566 6387 330 330 4.36% 5.17%

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 15 174 216812 1256.81 857 841 171.8
A 15 223 34100 193.54 857 841 171.8
A 8 247 21339 119.28 857 841 171.8
B 5 65 518984 3300.09 842 824 157.0
B 0 189 73106 460.35 842 824 157.0
B 4 173 60567 380.49 842 824 157.0
C 14 238 125389 671.5 798 805 185.5
C 3 233 56582 300.63 798 805 185.5
C 0 207 21931 113.87 798 805 185.5
D 1 52 1878972 9570.42 809 785 196.2
D 7 38 28737 142.43 809 785 196.2
D 2 234 24219 119.41 809 785 196.2

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