ASTROSAT CZTI

Data Quality Report

Orbit 43451

Creation date: 2024-06-27T22:52:08.883592
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_018T01_9000005874_43451cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43451cztM0_level2_quad_clean.evt
Size (bytes)493,603,20089,568,000
Size470.7 MB 85.4 MB
Events in quadrant A6,631,889511,683
Events in quadrant B2,992,260648,573
Events in quadrant C2,819,775608,075
Events in quadrant D5,371,619533,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235771
B0128591
C0121401
D0199831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5872125521.372616%
B5872210.357629%
C587340.068108%
D58733876.589477%

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 7155 5873 1180 1180 16.49% 20.09%
B 7155 5873 10 10 0.14% 0.17%
C 7156 5874 1 1 0.01% 0.02%
D 7156 5874 368 368 5.14% 6.26%

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 15 222 3149611 26344.22 585 573 119.5
A 15 237 615685 5145.9 585 573 119.5
A 10 83 579783 4845.55 585 573 119.5
B 0 199 177951 1461.25 626 607 121.4
B 0 189 117582 963.83 626 607 121.4
B 0 190 74136 605.85 626 607 121.4
C 15 214 263449 1817.87 611 614 144.6
C 3 233 170006 1171.58 611 614 144.6
C 13 61 4115 24.21 611 614 144.6
D 1 52 1671856 11464.88 596 579 145.8
D 2 16 607152 4161.06 596 579 145.8
D 13 249 334934 2293.66 596 579 145.8

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