ASTROSAT CZTI

Data Quality Report

Orbit 07904

Creation date: 2024-06-27T15:25:21.742773
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_029T01_9000001082_07904cztM0_level2.evt modeM0/AS1A02_029T01_9000001082_07904cztM0_level2_quad_clean.evt
Size (bytes)481,645,44096,122,880
Size459.3 MB 91.7 MB
Events in quadrant A3,185,043609,543
Events in quadrant B3,287,827632,856
Events in quadrant C4,349,356612,321
Events in quadrant D3,307,235587,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140103
B0142482
C0173612
D0145242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727210.312175%
B6727500.743273%
C67271231.828453%
D6727410.609484%

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 7902 6728 0 0 0.00% 0.00%
B 7902 6728 17 17 0.22% 0.25%
C 7902 6728 34 34 0.43% 0.51%
D 7902 6728 18 18 0.23% 0.27%

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 0 128 37233 223.54 801 783 163.1
A 15 239 20236 119.3 801 783 163.1
A 8 15 14002 81.07 801 783 163.1
B 10 16 64209 413.05 815 795 153.5
B 4 173 31598 200.64 815 795 153.5
B 12 111 15911 98.46 815 795 153.5
C 1 16 1216852 6596.37 795 800 184.4
C 12 4 33261 176.08 795 800 184.4
C 13 61 5972 28.06 795 800 184.4
D 4 95 134883 701.03 788 764 191.3
D 1 52 93631 485.41 788 764 191.3
D 7 71 24183 122.41 788 764 191.3

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