ASTROSAT CZTI

Data Quality Report

Orbit 43893

Creation date: 2024-06-27T22:56:48.629694
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/AS1A13_073T04_9000005912_43893cztM0_level2.fits modeM0/AS1A13_073T04_9000005912_43893cztM0_level2_quad_clean.evt
Size (bytes)517,265,28092,096,640
Size493.3 MB 87.8 MB
Events in quadrant A8,289,206482,442
Events in quadrant B3,093,499674,940
Events in quadrant C2,789,586658,734
Events in quadrant D4,510,950555,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290292
B0133272
C0125452
D0177532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5968195532.758043%
B59681212.027480%
C5968250.418901%
D59685158.629357%

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 7093 5969 1745 1745 24.60% 29.23%
B 7093 5969 63 63 0.89% 1.06%
C 7093 5969 12 12 0.17% 0.20%
D 7093 5969 458 458 6.46% 7.67%

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 15 223 4500299 38871.16 561 549 115.8
A 10 83 936868 8088.41 561 549 115.8
A 15 222 419680 3620.67 561 549 115.8
B 7 205 158655 1210.53 664 644 130.5
B 4 158 63280 479.86 664 644 130.5
B 0 199 58955 446.72 664 644 130.5
C 14 254 91796 587.21 657 660 155.2
C 3 233 73348 468.34 657 660 155.2
C 11 16 21227 132.52 657 660 155.2
D 5 235 851834 5391.59 627 608 157.9
D 1 52 189872 1198.78 627 608 157.9
D 13 171 172717 1090.12 627 608 157.9

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