ASTROSAT CZTI

Data Quality Report

Orbit 39310

Creation date: 2024-06-27T22:03:02.885189
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/AS1A12_102T01_9000005466_39310cztM0_level2.fits modeM0/AS1A12_102T01_9000005466_39310cztM0_level2_quad_clean.evt
Size (bytes)1,707,056,640208,595,520
Size1.6 GB 198.9 MB
Events in quadrant A7,902,7171,709,008
Events in quadrant B7,069,4961,741,180
Events in quadrant C7,682,9411,664,397
Events in quadrant D39,321,484121,327

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332875
B0321574
C0327604
D01276414

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15646540.345136%
B15646420.268439%
C15646290.185351%
D156461472994.139077%

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 19822 15649 27 27 0.14% 0.17%
B 19822 15649 20 20 0.10% 0.13%
C 19822 15649 23 23 0.12% 0.15%
D 19821 15647 12263 12263 61.87% 78.37%

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 1089967 3156.13 1713 1677 344.8
A 13 248 172990 496.82 1713 1677 344.8
A 3 137 19471 51.6 1713 1677 344.8
B 5 255 149325 452.73 1703 1654 326.2
B 5 184 106751 322.2 1703 1654 326.2
B 5 172 102009 307.67 1703 1654 326.2
C 15 214 691109 1782.26 1673 1685 386.8
C 9 187 199130 510.42 1673 1685 386.8
C 3 233 135992 347.2 1673 1685 386.8
D 12 235 33141209 185840.85 724 701 178.3
D 12 227 2357698 13217.25 724 701 178.3
D 2 249 369042 2065.53 724 701 178.3

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