ASTROSAT CZTI

Data Quality Report

Orbit 07769

Creation date: 2024-06-27T15:23:45.014500
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/AS1A02_132T01_9000001068_07769cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07769cztM0_level2_quad_clean.evt
Size (bytes)436,253,76096,724,800
Size416.0 MB 92.2 MB
Events in quadrant A3,075,884615,123
Events in quadrant B3,352,037630,289
Events in quadrant C3,060,045628,137
Events in quadrant D3,272,056592,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136293
B0143972
C0135652
D0142352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6650430.646617%
B6650650.977444%
C6650300.451128%
D6650410.616541%

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 8630 6651 2 2 0.02% 0.03%
B 8630 6651 7 7 0.08% 0.11%
C 8630 6651 0 0 0.00% 0.00%
D 8630 6651 16 16 0.19% 0.24%

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 8 6 12672 72.99 793 777 163.0
A 0 226 7488 41.18 793 777 163.0
A 12 194 6841 37.21 793 777 163.0
B 4 173 62704 397.44 809 791 155.8
B 4 239 62371 395.31 809 791 155.8
B 0 214 28367 177.02 809 791 155.8
C 13 61 5981 28.25 783 790 183.7
C 12 4 3589 15.23 783 790 183.7
C 8 222 2474 9.16 783 790 183.7
D 2 152 163829 859.61 773 751 189.7
D 1 52 107206 561.14 773 751 189.7
D 13 104 25803 132.05 773 751 189.7

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