ASTROSAT CZTI

Data Quality Report

Orbit 37967

Creation date: 2024-06-27T21:46:46.165423
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_082T01_9000005356_37967cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37967cztM0_level2_quad_clean.evt
Size (bytes)456,952,32050,826,240
Size435.8 MB 48.5 MB
Events in quadrant A4,678,954275,915
Events in quadrant B3,036,917305,094
Events in quadrant C2,898,990303,750
Events in quadrant D2,854,793273,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177203
B0124832
C0117012
D0121302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54352414.434223%
B5435791.453542%
C5435350.643974%
D5435571.048758%

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 7257 5436 179 179 2.47% 3.29%
B 7257 5436 50 50 0.69% 0.92%
C 7257 5436 27 27 0.37% 0.50%
D 7257 5436 39 39 0.54% 0.72%

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 15 222 960486 7815.12 621 611 122.8
A 15 235 905996 7371.48 621 611 122.8
A 10 83 362508 2946.5 621 611 122.8
B 0 229 169093 1415.97 636 619 119.0
B 5 184 160219 1341.39 636 619 119.0
B 5 200 76941 641.46 636 619 119.0
C 15 214 229571 1570.24 630 634 145.8
C 0 10 133182 909.12 630 634 145.8
C 14 254 77524 527.38 630 634 145.8
D 10 199 112057 741.52 622 607 150.3
D 1 52 81859 540.6 622 607 150.3
D 7 55 70850 467.35 622 607 150.3

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