ASTROSAT CZTI

Data Quality Report

Orbit 45855

Creation date: 2024-06-27T23:16:57.529779
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/AS1T05_187T01_9000006132_45855cztM0_level2.fits modeM0/AS1T05_187T01_9000006132_45855cztM0_level2_quad_clean.evt
Size (bytes)779,898,240114,085,440
Size743.8 MB 108.8 MB
Events in quadrant A6,555,468790,817
Events in quadrant B11,731,575612,212
Events in quadrant C3,594,530819,959
Events in quadrant D6,394,223697,560

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239041
B0402300
C0163060
D0242150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76713634.732108%
B7671273135.601616%
C76721061.381648%
D76727309.515120%

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 7671 7671 17 17 0.22% 0.22%
B 7671 7671 1618 1618 21.09% 21.09%
C 7672 7672 13 13 0.17% 0.17%
D 7672 7672 557 557 7.26% 7.26%

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 10 83 3054029 16344.2 887 865 186.8
A 14 235 52264 275.15 887 865 186.8
A 13 254 13189 65.97 887 865 186.8
B 3 112 7689381 48421.66 801 775 158.8
B 0 171 386478 2429.1 801 775 158.8
B 2 2 117990 738.2 801 775 158.8
C 14 254 104552 501.64 877 881 206.7
C 3 233 32005 150.6 877 881 206.7
C 2 14 15077 68.69 877 881 206.7
D 13 249 843455 3854.64 858 829 218.6
D 12 2 629402 2875.44 858 829 218.6
D 6 143 539492 2464.14 858 829 218.6

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