ASTROSAT CZTI

Data Quality Report

Orbit 12722

Creation date: 2024-06-27T16:31:34.461113
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_174T01_9000001876_12722cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12722cztM0_level2_quad_clean.evt
Size (bytes)682,093,440113,771,520
Size650.5 MB 108.5 MB
Events in quadrant A7,638,274736,423
Events in quadrant B5,650,338706,130
Events in quadrant C3,289,335791,145
Events in quadrant D3,649,271767,550

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271922
B0210361
C0136811
D0148751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354136221.435316%
B6354109117.170286%
C6354500.786906%
D63541552.439408%

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 7635 6356 1299 1299 17.01% 20.44%
B 7635 6356 734 734 9.61% 11.55%
C 7635 6356 2 2 0.03% 0.03%
D 7635 6356 72 72 0.94% 1.13%

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 15 239 4229706 26604.07 792 782 159.0
A 8 15 287557 1804.1 792 782 159.0
A 12 189 57738 358.31 792 782 159.0
B 4 239 2471797 17341.58 760 744 142.5
B 3 209 67126 465.86 760 744 142.5
B 0 219 65659 455.57 760 744 142.5
C 15 208 117588 629.03 809 818 185.6
C 9 221 15296 77.99 809 818 185.6
C 13 61 5940 27.59 809 818 185.6
D 1 52 373914 1948.11 813 796 191.5
D 13 104 124410 645.41 813 796 191.5
D 10 199 40992 209.87 813 796 191.5

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