ASTROSAT CZTI

Data Quality Report

Orbit 35667

Creation date: 2022-05-04T00:30:03.656015
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/AS1C07_001T07_9000005104_35667cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35667cztM0_level2_quad_clean.evt
Size (bytes)480,476,160103,348,800
Size458.2 MB 98.6 MB
Events in quadrant A3,248,815693,044
Events in quadrant B3,912,625693,089
Events in quadrant C3,060,048722,606
Events in quadrant D3,991,867671,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129753
B0148132
C0120922
D0152742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49801222.449799%
B49803987.991968%
C49801793.594378%
D49803607.228916%

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 7041 4981 75 75 1.07% 1.51%
B 7041 4981 303 303 4.30% 6.08%
C 7041 4981 139 139 1.97% 2.79%
D 7041 4981 331 331 4.70% 6.65%

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 15 169 747150 6190.23 600 589 120.6
A 10 83 144030 1189.36 600 589 120.6
A 7 16 18468 148.25 600 589 120.6
B 5 172 886830 8109.51 589 574 109.3
B 5 255 558791 5107.85 589 574 109.3
B 3 112 86525 786.48 589 574 109.3
C 0 10 381904 2770.82 602 608 137.6
C 15 214 204005 1478.06 602 608 137.6
C 1 23 90583 653.84 602 608 137.6
D 13 249 947589 6620.85 591 577 143.0
D 10 234 205178 1430.43 591 577 143.0
D 7 80 132686 923.61 591 577 143.0

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