ASTROSAT CZTI

Data Quality Report

Orbit 31182

Creation date: 2024-06-27T20:24:24.482839
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_058T02_9000004510_31182cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31182cztM0_level2_quad_clean.evt
Size (bytes)676,160,64092,257,920
Size644.8 MB 88.0 MB
Events in quadrant A3,626,690602,506
Events in quadrant B6,628,058575,857
Events in quadrant C3,923,560574,749
Events in quadrant D5,833,420560,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149662
B0244242
C0158542
D0223702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68891632.366091%
B688987512.701408%
C68895467.925679%
D68893014.369284%

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 8904 6891 5 5 0.06% 0.07%
B 8904 6891 313 313 3.52% 4.54%
C 8904 6891 33 33 0.37% 0.48%
D 8904 6891 109 109 1.22% 1.58%

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 96 93885 508.78 915 896 182.8
A 13 254 15091 77.66 915 896 182.8
A 3 137 9450 46.8 915 896 182.8
B 6 159 1820252 10744.8 865 843 169.3
B 4 80 1224462 7226.27 865 843 169.3
B 0 190 57253 333.14 865 843 169.3
C 0 10 225336 1119.59 857 865 200.5
C 14 238 212449 1055.32 857 865 200.5
C 14 254 106129 525.03 857 865 200.5
D 8 195 2329759 11026.05 885 865 211.2
D 2 250 73970 346.11 885 865 211.2
D 2 69 52717 245.49 885 865 211.2

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