ASTROSAT CZTI

Data Quality Report

Orbit 37134

Creation date: 2024-06-27T21:36:01.740853
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/AS1A11_079T01_9000005284_37134cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37134cztM0_level2_quad_clean.evt
Size (bytes)442,915,20067,550,400
Size422.4 MB 64.4 MB
Events in quadrant A2,783,842428,732
Events in quadrant B2,940,797424,614
Events in quadrant C3,189,929421,129
Events in quadrant D4,113,024373,397

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119813
B0125252
C0130082
D0161892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5672110.193935%
B5672631.110719%
C56721061.868829%
D56725169.097320%

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 7105 5673 4 4 0.06% 0.07%
B 7105 5673 49 49 0.69% 0.86%
C 7105 5673 88 88 1.24% 1.55%
D 7105 5673 423 423 5.95% 7.46%

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 263712 2021.65 639 627 130.1
A 9 143 27535 206.77 639 627 130.1
A 13 6 11958 87.07 639 627 130.1
B 5 172 188580 1538.52 631 614 122.2
B 5 184 113476 923.79 631 614 122.2
B 5 200 87341 709.87 631 614 122.2
C 14 254 285105 1958.37 619 624 145.3
C 15 214 261615 1796.67 619 624 145.3
C 0 10 178927 1227.44 619 624 145.3
D 2 249 1107250 7645.4 593 576 144.8
D 13 249 222567 1533.61 593 576 144.8
D 12 235 142634 981.4 593 576 144.8

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