ASTROSAT CZTI

Data Quality Report

Orbit 17809

Creation date: 2024-06-27T17:41:10.414733
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/AS1A05_015T01_9000002650_17809cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17809cztM0_level2_quad_clean.evt
Size (bytes)436,250,88080,879,040
Size416.0 MB 77.1 MB
Events in quadrant A3,099,793498,648
Events in quadrant B3,219,029507,700
Events in quadrant C3,109,515487,118
Events in quadrant D3,324,230485,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138311
B0140091
C0137481
D0147741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67591071.583074%
B67601201.775148%
C67601241.834320%
D67601902.810651%

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 7039 6761 1 1 0.01% 0.01%
B 7040 6761 6 6 0.09% 0.09%
C 7040 6762 0 0 0.00% 0.00%
D 7040 6761 48 48 0.68% 0.71%

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 32405 195.05 797 781 162.1
A 0 226 6959 38.1 797 781 162.1
A 3 137 6139 33.05 797 781 162.1
B 7 220 47164 297.39 797 776 156.0
B 12 111 18417 113.1 797 776 156.0
B 11 111 16230 99.07 797 776 156.0
C 14 238 116942 645.39 762 766 180.0
C 5 218 12281 63.97 762 766 180.0
C 3 233 7520 37.52 762 766 180.0
D 7 238 295840 1601.68 767 746 184.2
D 10 70 86868 467.44 767 746 184.2
D 2 234 30939 163.88 767 746 184.2

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