ASTROSAT CZTI

Data Quality Report

Orbit 35161

Creation date: 2022-03-30T21:13:15.918502
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/AS1A11_069T05_9000005038_35161cztM0_level2.evt modeM0/AS1A11_069T05_9000005038_35161cztM0_level2_quad_clean.evt
Size (bytes)410,472,00064,128,960
Size391.5 MB 61.2 MB
Events in quadrant A1,807,115471,577
Events in quadrant B4,192,907397,124
Events in quadrant C2,003,703447,964
Events in quadrant D4,207,792394,957

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073301
B0147391
C079201
D0147821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A323780.247142%
B323792328.514056%
C3237611.884461%
D323745414.025332%

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 5301 3238 5 5 0.09% 0.15%
B 5301 3238 628 628 11.85% 19.39%
C 5301 3238 42 42 0.79% 1.30%
D 5301 3238 418 418 7.89% 12.91%

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 10 83 52192 579.89 443 436 89.3
A 9 143 36867 408.18 443 436 89.3
A 13 6 6781 71.09 443 436 89.3
B 5 236 2022993 28000.23 379 372 72.2
B 5 172 445138 6157.13 379 372 72.2
B 0 182 172237 2379.22 379 372 72.2
C 0 10 179306 1869.05 413 418 95.7
C 15 214 136820 1425.15 413 418 95.7
C 0 207 54452 564.56 413 418 95.7
D 8 195 1371830 13974.29 404 396 98.1
D 7 80 737422 7509.96 404 396 98.1
D 10 118 237108 2411.99 404 396 98.1

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