ASTROSAT CZTI

Data Quality Report

Orbit 39191

Creation date: 2024-06-27T22:01:36.282531
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_054T02_9000005444_39191cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39191cztM0_level2_quad_clean.evt
Size (bytes)486,138,240100,183,680
Size463.6 MB 95.5 MB
Events in quadrant A3,212,088700,129
Events in quadrant B2,752,562704,483
Events in quadrant C3,392,601661,741
Events in quadrant D8,156,399534,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134533
B0126662
C0140882
D0285832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200210.338710%
B6200160.258065%
C6200951.532258%
D6200122619.774194%

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 9007 6202 12 12 0.13% 0.19%
B 9007 6202 7 7 0.08% 0.11%
C 9007 6202 76 76 0.84% 1.23%
D 9007 6202 1065 1065 11.82% 17.17%

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 476606 3464.57 678 664 137.4
A 9 143 68280 492.2 678 664 137.4
A 2 79 27831 197.76 678 664 137.4
B 5 172 71827 546.73 671 653 130.2
B 0 213 34316 258.59 671 653 130.2
B 12 111 16232 119.67 671 653 130.2
C 9 187 553887 3608.66 653 655 153.3
C 15 214 256981 1671.98 653 655 153.3
C 0 10 13664 84.86 653 655 153.3
D 12 235 4334810 29083.48 611 591 149.0
D 12 227 620443 4159.33 611 591 149.0
D 2 249 408366 2736.25 611 591 149.0

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