ASTROSAT CZTI

Data Quality Report

Orbit 14231

Creation date: 2024-06-27T16:52:15.092984
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/AS1G08_084T01_9000002100_14231cztM0_level2.evt modeM0/AS1G08_084T01_9000002100_14231cztM0_level2_quad_clean.evt
Size (bytes)524,229,120108,524,160
Size499.9 MB 103.5 MB
Events in quadrant A3,226,685719,505
Events in quadrant B3,762,519720,020
Events in quadrant C3,601,110699,555
Events in quadrant D4,824,505673,459

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140082
B0155681
C0147681
D0188441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68051111.631154%
B68052233.277002%
C6805971.425422%
D68052754.041146%

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 7476 6807 2 2 0.03% 0.03%
B 7476 6807 40 40 0.54% 0.59%
C 7476 6807 3 3 0.04% 0.04%
D 7476 6807 164 164 2.19% 2.41%

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 12 189 53648 321.68 812 794 164.3
A 8 15 19278 112.5 812 794 164.3
A 15 69 11522 65.29 812 794 164.3
B 0 182 218166 1434.4 808 788 151.5
B 0 229 204283 1342.79 808 788 151.5
B 4 97 55793 362.96 808 788 151.5
C 3 233 527296 2921.88 782 785 180.2
C 0 207 14495 76.08 782 785 180.2
C 7 221 6525 31.85 782 785 180.2
D 1 52 497526 2696.34 776 758 184.2
D 5 222 447222 2423.3 776 758 184.2
D 8 195 388114 2102.48 776 758 184.2

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