ASTROSAT CZTI

Data Quality Report

Orbit 33887

Creation date: 2024-06-27T20:53:47.577604
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/AS1T04_090T01_9000004840_33887cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33887cztM0_level2_quad_clean.evt
Size (bytes)500,400,00066,911,040
Size477.2 MB 63.8 MB
Events in quadrant A2,508,879443,048
Events in quadrant B3,543,138435,524
Events in quadrant C3,021,013429,555
Events in quadrant D5,746,514370,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101973
B0134532
C0117092
D0205142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494370.141614%
B49432935.927574%
C4943861.739834%
D494381516.487963%

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 7066 4944 1 1 0.01% 0.02%
B 7066 4944 191 191 2.70% 3.86%
C 7066 4944 64 64 0.91% 1.29%
D 7066 4944 696 696 9.85% 14.08%

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 7 16 31932 249.72 636 625 125.4
A 10 83 11150 83.95 636 625 125.4
A 13 6 8697 64.39 636 625 125.4
B 5 172 541730 4765.54 609 595 113.6
B 5 255 455217 4003.66 609 595 113.6
B 4 232 66360 579.16 609 595 113.6
C 0 10 263430 1892.34 611 616 138.9
C 15 214 215962 1550.56 611 616 138.9
C 3 233 117299 840.15 611 616 138.9
D 12 235 1965389 13798.1 581 566 142.4
D 8 195 741918 5206.19 581 566 142.4
D 2 250 320189 2244.57 581 566 142.4

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