ASTROSAT CZTI

Data Quality Report

Orbit 39510

Creation date: 2024-06-27T22:05:30.853404
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_9000005488_39510cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39510cztM0_level2_quad_clean.evt
Size (bytes)357,796,80094,383,360
Size341.2 MB 90.0 MB
Events in quadrant A2,880,514632,240
Events in quadrant B2,647,302649,842
Events in quadrant C3,343,195607,336
Events in quadrant D3,915,290556,831

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121633
B0122032
C0137512
D0159522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A588680.135916%
B5886290.492695%
C5886901.529052%
D58861793.041115%

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 7200 5887 3 3 0.04% 0.05%
B 7200 5887 14 14 0.19% 0.24%
C 7200 5887 92 92 1.28% 1.56%
D 7200 5887 174 174 2.42% 2.96%

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 439960 3417.09 627 613 128.6
A 13 254 8038 57.75 627 613 128.6
A 3 137 6855 48.55 627 613 128.6
B 5 172 167766 1377.64 622 602 121.3
B 15 85 36744 297.86 622 602 121.3
B 12 111 15148 119.88 622 602 121.3
C 9 187 660336 4630.39 607 610 142.5
C 15 214 244670 1712.97 607 610 142.5
C 15 208 66413 461.85 607 610 142.5
D 12 227 978332 6590.85 603 586 148.3
D 2 249 266745 1794.14 603 586 148.3
D 13 249 201232 1352.53 603 586 148.3

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