ASTROSAT CZTI

Data Quality Report

Orbit 06235

Creation date: 2024-06-27T15:04:26.204649
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/AS1A02_046T01_9000000814_06235cztM0_level2.evt modeM0/AS1A02_046T01_9000000814_06235cztM0_level2_quad_clean.evt
Size (bytes)525,657,600131,667,840
Size501.3 MB 125.6 MB
Events in quadrant A4,571,707870,218
Events in quadrant B3,529,169886,298
Events in quadrant C3,177,503885,164
Events in quadrant D4,153,376845,659

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185482
B0155742
C0146332
D0173982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71831472.046499%
B7183670.932758%
C7183290.403731%
D7183761.058054%

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 8133 7184 11 11 0.14% 0.15%
B 8133 7184 7 7 0.09% 0.10%
C 8133 7184 0 0 0.00% 0.00%
D 8133 7184 18 18 0.22% 0.25%

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 34 1238966 7390.23 817 798 167.5
A 0 31 106408 630.35 817 798 167.5
A 8 15 80483 475.61 817 798 167.5
B 0 219 98904 630.43 829 808 155.6
B 15 204 73832 469.3 829 808 155.6
B 0 214 56475 357.75 829 808 155.6
C 1 16 12535 63.13 808 812 185.7
C 13 61 6483 30.54 808 812 185.7
C 9 16 5431 24.87 808 812 185.7
D 2 63 487627 2477.82 806 779 196.5
D 12 221 299726 1521.5 806 779 196.5
D 2 136 129982 657.58 806 779 196.5

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