ASTROSAT CZTI

Data Quality Report

Orbit 46359

Creation date: 2024-06-27T23:22:11.803096
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_070T05_9000006198_46359cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46359cztM0_level2_quad_clean.evt
Size (bytes)607,680,000112,766,400
Size579.5 MB 107.5 MB
Events in quadrant A6,935,555770,728
Events in quadrant B4,024,762811,333
Events in quadrant C3,548,255771,186
Events in quadrant D7,460,507588,876

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250421
B0163831
C0152661
D0268431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67764887.201889%
B67763024.456907%
C67771512.228125%
D6777143421.159805%

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 7876 6777 104 104 1.32% 1.53%
B 7876 6777 99 99 1.26% 1.46%
C 7877 6778 47 47 0.60% 0.69%
D 7877 6778 945 945 12.00% 13.94%

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 3326608 20118.95 798 779 165.3
A 13 248 307730 1856.84 798 779 165.3
A 15 223 138434 832.72 798 779 165.3
B 5 255 389236 2470.58 797 773 157.2
B 5 172 264140 1674.98 797 773 157.2
B 15 201 75105 472.74 797 773 157.2
C 11 16 342890 1868.25 788 792 183.1
C 14 254 82060 443.82 788 792 183.1
C 3 233 20417 107.18 788 792 183.1
D 5 235 3044167 16608.49 730 709 183.2
D 1 52 933794 5091.95 730 709 183.2
D 12 233 100390 543.97 730 709 183.2

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