ASTROSAT CZTI

Data Quality Report

Orbit 39284

Creation date: 2024-06-27T22:02:40.131274
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_037T01_9000005456_39284cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39284cztM0_level2_quad_clean.evt
Size (bytes)591,500,160109,555,200
Size564.1 MB 104.5 MB
Events in quadrant A3,912,544782,897
Events in quadrant B3,350,229799,043
Events in quadrant C3,427,960764,916
Events in quadrant D10,661,728483,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159731
B0145601
C0143901
D0365281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6991260.371907%
B6991430.615077%
C6991110.157345%
D6991254236.361036%

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 9678 6993 11 11 0.11% 0.16%
B 9678 6993 15 15 0.15% 0.21%
C 9678 6993 5 5 0.05% 0.07%
D 9678 6993 2014 2014 20.81% 28.80%

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 499182 3039.87 799 783 164.0
A 15 222 288735 1756.3 799 783 164.0
A 2 79 25734 152.18 799 783 164.0
B 5 172 143123 911.82 790 768 156.1
B 0 189 47297 298.03 790 768 156.1
B 0 190 22075 136.48 790 768 156.1
C 15 214 290447 1578.32 779 785 183.5
C 9 187 53104 285.08 779 785 183.5
C 3 233 21602 113.43 779 785 183.5
D 12 235 6597660 40932.76 656 638 161.2
D 12 227 1134095 7032.8 656 638 161.2
D 5 222 181604 1122.85 656 638 161.2

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