ASTROSAT CZTI

Data Quality Report

Orbit 31420

Creation date: 2024-06-27T20:28:05.126375
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/AS1A10_094T29_9000004564_31420cztM0_level2.evt modeM0/AS1A10_094T29_9000004564_31420cztM0_level2_quad_clean.evt
Size (bytes)525,156,480129,870,720
Size500.8 MB 123.9 MB
Events in quadrant A3,119,115885,095
Events in quadrant B5,212,342874,462
Events in quadrant C3,297,123857,196
Events in quadrant D3,819,241847,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136962
B0205892
C0139182
D0159032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6733340.504975%
B67331021.514926%
C6733781.158473%
D6733470.698054%

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 7653 6734 0 0 0.00% 0.00%
B 7653 6733 11 11 0.14% 0.16%
C 7653 6734 1 1 0.01% 0.01%
D 7653 6733 17 17 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 13 254 12426 72.27 807 792 161.0
A 3 137 8432 47.46 807 792 161.0
A 0 226 7026 38.72 807 792 161.0
B 6 159 1860527 12243.46 798 777 151.9
B 4 80 107138 700.22 798 777 151.9
B 0 230 23810 151.64 798 777 151.9
C 14 238 127440 691.01 776 779 183.3
C 3 233 118762 643.66 776 779 183.3
C 2 114 15584 80.77 776 779 183.3
D 8 195 631363 3287.96 777 757 191.8
D 2 250 76942 397.22 777 757 191.8
D 12 218 72423 373.66 777 757 191.8

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