ASTROSAT CZTI

Data Quality Report

Orbit 30725

Creation date: 2024-06-27T20:18:55.809813
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/AS1A10_071T11_9000004436_30725cztM0_level2.evt modeM0/AS1A10_071T11_9000004436_30725cztM0_level2_quad_clean.evt
Size (bytes)633,769,92089,608,320
Size604.4 MB 85.5 MB
Events in quadrant A3,814,336578,214
Events in quadrant B5,256,056579,385
Events in quadrant C3,422,749553,439
Events in quadrant D6,237,388524,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155692
B0206892
C0143652
D0236862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68581021.487314%
B6858600.874891%
C6858670.976961%
D68582123.091280%

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 7768 6859 58 58 0.75% 0.85%
B 7768 6858 3 3 0.04% 0.04%
C 7768 6859 0 0 0.00% 0.00%
D 7768 6858 225 225 2.90% 3.28%

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 13 493234 2924.88 834 815 168.4
A 8 192 102495 603.96 834 815 168.4
A 13 254 11861 65.61 834 815 168.4
B 6 159 1957137 12199.94 830 809 160.4
B 12 111 20368 121.97 830 809 160.4
B 11 111 18193 108.41 830 809 160.4
C 14 238 128952 679.37 801 808 188.6
C 3 233 102518 539.23 801 808 188.6
C 0 10 25320 129.95 801 808 188.6
D 8 195 2740162 14323.65 796 775 191.2
D 13 249 87272 452.27 796 775 191.2
D 10 253 84910 439.92 796 775 191.2

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