ASTROSAT CZTI

Data Quality Report

Orbit 34812

Creation date: 2022-03-07T06:31:20.732072
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/AS1C07_005T01_9000004992_34812cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34812cztM0_level2_quad_clean.evt
Size (bytes)397,653,12098,861,760
Size379.2 MB 94.3 MB
Events in quadrant A2,734,593672,458
Events in quadrant B2,725,404691,120
Events in quadrant C2,837,291661,322
Events in quadrant D3,407,820620,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111502
B0110361
C0111251
D0135731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4977150.301386%
B4977410.823789%
C4977761.527024%
D49771442.893309%

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 6979 4978 6 6 0.09% 0.12%
B 6979 4978 21 21 0.30% 0.42%
C 6979 4978 51 51 0.73% 1.02%
D 6979 4978 115 115 1.65% 2.31%

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 0 247 160844 1302.82 620 611 123.0
A 15 169 53002 425.98 620 611 123.0
A 10 83 48876 392.43 620 611 123.0
B 5 172 189463 1662.32 621 608 113.6
B 4 232 42760 371.03 621 608 113.6
B 5 255 20899 178.6 621 608 113.6
C 15 214 225576 1631.1 604 611 137.9
C 0 10 204360 1477.27 604 611 137.9
C 14 67 43064 307.8 604 611 137.9
D 8 195 536973 3596.41 593 580 149.1
D 2 249 212764 1422.65 593 580 149.1
D 13 249 105083 700.67 593 580 149.1

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