ASTROSAT CZTI

Data Quality Report

Orbit 20547

Creation date: 2024-06-27T18:16:43.261614
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_069T02_9000003038_20547cztM0_level2.evt modeM0/AS1A05_069T02_9000003038_20547cztM0_level2_quad_clean.evt
Size (bytes)906,419,520158,817,600
Size864.4 MB 151.5 MB
Events in quadrant A6,322,279989,392
Events in quadrant B6,459,8981,009,637
Events in quadrant C6,280,232954,272
Events in quadrant D7,477,227926,492

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276213
B0276053
C0274253
D0314553

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134561581.174197%
B134561811.345125%
C134561651.226219%
D134563372.504459%

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 15021 13459 4 4 0.03% 0.03%
B 15021 13459 0 0 0.00% 0.00%
C 15021 13459 1 1 0.01% 0.01%
D 15021 13459 219 219 1.46% 1.63%

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 78086 233.34 1614 1578 327.9
A 9 143 14599 39.71 1614 1578 327.9
A 3 137 14119 38.25 1614 1578 327.9
B 0 230 69063 216.37 1611 1569 311.9
B 12 111 39538 121.72 1611 1569 311.9
B 11 111 34323 105.0 1611 1569 311.9
C 14 238 239762 654.05 1543 1548 364.2
C 8 208 24162 62.09 1543 1548 364.2
C 13 61 10525 24.65 1543 1548 364.2
D 2 165 806506 2109.65 1558 1510 381.6
D 1 52 641476 1677.16 1558 1510 381.6
D 13 153 69443 178.03 1558 1510 381.6

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