ASTROSAT CZTI

Data Quality Report

Orbit 37203

Creation date: 2024-06-27T21:36:51.771053
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_37203cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37203cztM0_level2_quad_clean.evt
Size (bytes)484,502,40092,600,640
Size462.1 MB 88.3 MB
Events in quadrant A2,864,973638,010
Events in quadrant B3,292,296631,121
Events in quadrant C3,638,601615,448
Events in quadrant D4,529,392559,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115743
B0128502
C0139672
D0167492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5136220.428349%
B51361472.862150%
C5136611.187695%
D51364889.501558%

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 7288 5137 5 5 0.07% 0.10%
B 7288 5137 96 96 1.32% 1.87%
C 7288 5137 43 43 0.59% 0.84%
D 7288 5137 439 439 6.02% 8.55%

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 258581 1939.4 666 655 133.0
A 13 248 10891 76.97 666 655 133.0
A 9 143 10763 76.0 666 655 133.0
B 5 172 424999 3492.53 643 628 121.5
B 5 184 175391 1438.28 643 628 121.5
B 0 213 115406 944.61 643 628 121.5
C 10 49 615272 4183.28 633 638 146.9
C 15 214 224488 1523.55 633 638 146.9
C 0 207 199692 1354.79 633 638 146.9
D 2 249 1088159 7203.81 619 603 151.0
D 12 227 499906 3307.31 619 603 151.0
D 2 153 122773 809.24 619 603 151.0

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