ASTROSAT CZTI

Data Quality Report

Orbit 15225

Creation date: 2024-06-27T17:05:32.679980
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_15225cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15225cztM0_level2_quad_clean.evt
Size (bytes)621,705,600103,515,840
Size592.9 MB 98.7 MB
Events in quadrant A5,102,331693,083
Events in quadrant B5,493,003656,919
Events in quadrant C4,535,813677,932
Events in quadrant D3,260,077655,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198773
B0206662
C0182212
D0140122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64693455.333127%
B646973611.377338%
C6469500.772917%
D6469600.927500%

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 7735 6470 181 181 2.34% 2.80%
B 7735 6471 500 500 6.46% 7.73%
C 7735 6471 0 0 0.00% 0.00%
D 7735 6470 20 20 0.26% 0.31%

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 1641034 9769.96 833 817 167.9
A 12 189 203194 1205.46 833 817 167.9
A 9 143 40267 234.98 833 817 167.9
B 3 112 1667826 11025.09 804 786 151.2
B 3 64 198493 1307.55 804 786 151.2
B 7 220 150171 987.97 804 786 151.2
C 3 233 1347383 7326.21 799 806 183.8
C 7 247 50791 271.95 799 806 183.8
C 4 254 20344 106.3 799 806 183.8
D 7 38 83087 419.59 808 786 196.1
D 2 120 26608 131.65 808 786 196.1
D 2 234 25477 125.88 808 786 196.1

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