ASTROSAT CZTI

Data Quality Report

Orbit 15817

Creation date: 2024-06-27T17:13:55.713424
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/AS1A04_026T01_9000002342_15817cztM0_level2.evt modeM0/AS1A04_026T01_9000002342_15817cztM0_level2_quad_clean.evt
Size (bytes)563,446,08068,256,000
Size537.3 MB 65.1 MB
Events in quadrant A3,171,832402,010
Events in quadrant B6,962,728395,165
Events in quadrant C3,302,932409,342
Events in quadrant D3,186,512406,814

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137933
B0253532
C0139992
D0138892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6498540.831025%
B64984066.248076%
C6498941.446599%
D6498640.984918%

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 7609 6500 7 7 0.09% 0.11%
B 7609 6499 86 86 1.13% 1.32%
C 7609 6500 5 5 0.07% 0.08%
D 7609 6500 10 10 0.13% 0.15%

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 32290 193.77 809 792 162.6
A 15 239 20565 121.64 809 792 162.6
A 0 226 7193 39.38 809 792 162.6
B 5 65 3357285 22331.28 800 780 150.3
B 7 220 103327 682.26 800 780 150.3
B 3 209 77251 508.77 800 780 150.3
C 14 238 120659 656.88 788 794 182.5
C 9 54 56851 307.2 788 794 182.5
C 3 233 38656 207.49 788 794 182.5
D 2 152 75234 359.52 798 776 207.1
D 2 234 26010 121.84 798 776 207.1
D 13 172 18628 86.2 798 776 207.1

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