ASTROSAT CZTI

Data Quality Report

Orbit 44808

Creation date: 2024-06-27T23:06:50.092006
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_012T01_9000006024_44808cztM0_level2.fits modeM0/AS1A13_012T01_9000006024_44808cztM0_level2_quad_clean.evt
Size (bytes)742,495,68094,366,080
Size708.1 MB 90.0 MB
Events in quadrant A13,314,088327,589
Events in quadrant B3,549,850757,190
Events in quadrant C2,936,958726,307
Events in quadrant D7,190,202601,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0439075
B0148342
C0133092
D0259138

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6373403563.313981%
B63731512.369371%
C6373210.329515%
D637277912.225361%

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 7573 6373 3898 3898 51.47% 61.16%
B 7573 6373 66 66 0.87% 1.04%
C 7573 6374 3 3 0.04% 0.05%
D 7573 6373 850 850 11.22% 13.34%

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 9517944 85946.27 534 525 110.7
A 10 83 1633628 14747.6 534 525 110.7
A 13 248 56115 502.0 534 525 110.7
B 0 189 194974 1323.1 739 717 146.8
B 0 155 128074 867.44 739 717 146.8
B 5 255 69506 468.53 739 717 146.8
C 1 3 53227 308.61 722 726 170.1
C 14 254 23063 131.3 722 726 170.1
C 3 233 16827 94.64 722 726 170.1
D 1 52 2167343 12521.86 681 660 173.0
D 11 241 701509 4050.4 681 660 173.0
D 6 239 404706 2335.09 681 660 173.0

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