ASTROSAT CZTI

Data Quality Report

Orbit 06283

Creation date: 2024-06-27T15:05:11.012422
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_118T01_9000000826_06283cztM0_level2.evt modeM0/AS1A02_118T01_9000000826_06283cztM0_level2_quad_clean.evt
Size (bytes)540,120,96095,538,240
Size515.1 MB 91.1 MB
Events in quadrant A3,686,513623,956
Events in quadrant B3,816,464618,908
Events in quadrant C2,898,807619,066
Events in quadrant D5,513,481576,269

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150852
B0156361
C0133501
D0209451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65161672.562922%
B65162764.235727%
C6516971.488643%
D65165428.317986%

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 7591 6516 5 5 0.07% 0.08%
B 7591 6516 105 105 1.38% 1.61%
C 7591 6516 2 2 0.03% 0.03%
D 7591 6516 420 420 5.53% 6.45%

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 8 15 624090 4048.49 764 748 154.0
A 15 174 87504 563.46 764 748 154.0
A 13 251 27023 170.65 764 748 154.0
B 0 219 384472 2677.09 761 744 143.3
B 3 64 368960 2568.87 761 744 143.3
B 15 204 49794 342.2 761 744 143.3
C 9 54 10132 55.59 739 742 168.9
C 13 61 6051 31.43 739 742 168.9
C 1 16 3462 16.1 739 742 168.9
D 12 220 1790458 10249.46 722 700 174.6
D 12 227 310215 1772.51 722 700 174.6
D 12 110 232224 1325.88 722 700 174.6

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