ASTROSAT CZTI

Data Quality Report

Orbit 15226

Creation date: 2024-06-27T17:05:33.609858
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_105T01_9000002248_15226cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15226cztM0_level2_quad_clean.evt
Size (bytes)588,335,04091,563,840
Size561.1 MB 87.3 MB
Events in quadrant A4,932,141621,725
Events in quadrant B3,797,573628,416
Events in quadrant C5,491,526509,190
Events in quadrant D3,177,645581,519

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194133
B0153082
C0204922
D0135292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61844697.584088%
B61841652.668176%
C618487114.084735%
D6184641.034929%

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 7530 6186 404 404 5.37% 6.53%
B 7530 6186 81 81 1.08% 1.31%
C 7530 6186 786 786 10.44% 12.71%
D 7530 6186 38 38 0.50% 0.61%

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 0 253 1706697 10725.26 795 780 159.1
A 12 189 119295 745.11 795 780 159.1
A 9 143 31752 194.72 795 780 159.1
B 3 64 293679 1950.14 803 786 150.2
B 7 220 150184 994.72 803 786 150.2
B 0 190 38456 250.81 803 786 150.2
C 3 233 2647266 16617.0 690 694 159.3
C 4 254 107028 667.64 690 694 159.3
C 7 247 45580 281.83 690 694 159.3
D 7 38 178287 936.29 771 749 189.6
D 2 120 32744 168.73 771 749 189.6
D 2 234 24520 125.36 771 749 189.6

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