ASTROSAT CZTI

Data Quality Report

Orbit 40137

Creation date: 2024-06-27T22:12:45.832155
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_004T01_9000005520_40137cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40137cztM0_level2_quad_clean.evt
Size (bytes)657,501,12073,359,360
Size627.0 MB 70.0 MB
Events in quadrant A4,018,052565,182
Events in quadrant B3,169,982621,099
Events in quadrant C13,609,68281,022
Events in quadrant D3,103,696560,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154673
B0132902
C0443012
D0131532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56165259.348291%
B56162023.596866%
C5616503589.654558%
D5616651.157407%

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 7289 5617 449 449 6.16% 7.99%
B 7289 5617 151 151 2.07% 2.69%
C 7289 5616 4934 4934 67.69% 87.86%
D 7289 5617 61 61 0.84% 1.09%

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 13 248 1158636 9510.73 593 581 121.8
A 10 83 472989 3879.73 593 581 121.8
A 12 189 49525 401.96 593 581 121.8
B 5 255 300252 2499.81 614 598 119.9
B 0 186 274173 2282.25 614 598 119.9
B 4 171 116145 963.93 614 598 119.9
C 9 187 12220471 170178.96 305 307 71.8
C 15 214 123502 1715.62 305 307 71.8
C 0 10 26919 370.6 305 307 71.8
D 12 227 190836 1284.22 608 590 148.1
D 13 249 110130 739.43 608 590 148.1
D 12 217 101018 677.92 608 590 148.1

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