ASTROSAT CZTI

Data Quality Report

Orbit 00195

Creation date: 2024-06-27T13:57:43.577294
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/AS1P01_140T01_9000000018_00195cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00195cztM0_level2_quad_clean.evt
Size (bytes)1,038,038,40062,190,720
Size990.0 MB 59.3 MB
Events in quadrant A7,537,894374,965
Events in quadrant B9,642,247349,907
Events in quadrant C6,778,362375,263
Events in quadrant D7,079,106361,269

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244122
B0244122
C0244122
D0244122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03618
B03618
C03618
D03819

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05325526630
B06605033027
C04876224387
D05070025352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6032160.265252%
B603273112.118700%
C603150.082905%
D6032270.447613%

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 7652 6034 222 222 2.90% 3.68%
B 7652 6034 1191 1191 15.56% 19.74%
C 7652 6034 62 62 0.81% 1.03%
D 7652 6034 130 130 1.70% 2.15%

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 12 150 54014 122.27 1914 1894 426.3
A 13 17 42219 94.6 1914 1894 426.3
A 0 253 20838 44.44 1914 1894 426.3
B 0 247 2520040 5767.96 1843 1851 436.6
B 0 183 17838 36.62 1843 1851 436.6
B 5 47 13720 27.19 1843 1851 436.6
C 1 192 63733 129.3 1695 1755 479.3
C 10 33 14872 27.36 1695 1755 479.3
C 9 188 11438 20.2 1695 1755 479.3
D 2 33 78682 146.29 1708 1759 525.8
D 10 154 50717 93.11 1708 1759 525.8
D 13 173 50154 92.04 1708 1759 525.8

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