ASTROSAT CZTI

Data Quality Report

Orbit 38463

Creation date: 2024-06-27T21:53:05.959360
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_018T01_9000005386_38463cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38463cztM0_level2_quad_clean.evt
Size (bytes)352,572,48090,938,880
Size336.2 MB 86.7 MB
Events in quadrant A2,773,823630,725
Events in quadrant B2,982,818624,037
Events in quadrant C2,520,164603,734
Events in quadrant D4,379,537540,089

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112573
B0121672
C0104202
D0164612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5071260.512719%
B50711643.234076%
C5071110.216920%
D50713296.487872%

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 7224 5072 8 8 0.11% 0.16%
B 7224 5072 125 125 1.73% 2.46%
C 7224 5072 7 7 0.10% 0.14%
D 7224 5072 260 260 3.60% 5.13%

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 399528 3390.33 584 574 117.7
A 9 143 56198 472.7 584 574 117.7
A 12 189 23697 196.5 584 574 117.7
B 5 184 472240 4360.22 573 557 108.2
B 4 232 80335 737.47 573 557 108.2
B 0 183 78051 716.35 573 557 108.2
C 15 214 213488 1619.63 570 575 131.5
C 0 10 36192 270.94 570 575 131.5
C 1 23 17986 132.45 570 575 131.5
D 13 249 917945 6807.37 563 547 134.8
D 12 235 738026 5472.32 563 547 134.8
D 12 227 140037 1035.06 563 547 134.8

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