ASTROSAT CZTI

Data Quality Report

Orbit 36765

Creation date: 2024-06-27T21:31:21.338948
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/AS1A11_087T05_9000005240_36765cztM0_level2.evt modeM0/AS1A11_087T05_9000005240_36765cztM0_level2_quad_clean.evt
Size (bytes)558,794,88055,252,800
Size532.9 MB 52.7 MB
Events in quadrant A1,921,826422,714
Events in quadrant B9,836,949146,285
Events in quadrant C1,959,999428,935
Events in quadrant D2,937,087395,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082672
B0319141
C081561
D0114291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A393640.101626%
B3936367393.318089%
C393680.203252%
D39362215.614837%

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 5759 3937 1 1 0.02% 0.03%
B 5759 3936 3534 3534 61.36% 89.79%
C 5759 3937 4 4 0.07% 0.10%
D 5759 3937 194 194 3.37% 4.93%

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 10 83 128490 1383.62 454 446 92.5
A 9 143 29206 310.77 454 446 92.5
A 15 223 6555 66.01 454 446 92.5
B 12 1 9063927 277440.19 166 163 32.7
B 0 213 55205 1684.83 166 163 32.7
B 5 255 28497 867.3 166 163 32.7
C 15 214 163473 1521.7 451 453 107.1
C 0 10 24041 220.18 451 453 107.1
C 0 207 15082 136.55 451 453 107.1
D 13 249 1017296 9311.89 442 431 109.2
D 12 227 51506 467.72 442 431 109.2
D 13 171 48081 436.35 442 431 109.2

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