ASTROSAT CZTI

Data Quality Report

Orbit 20220211_A10_071T13_9000004922_level2

Creation date: 2022-02-14T15:49:07.041450
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_071T13_9000004922cztM0_level2_bc.evt modeM0/AS1A10_071T13_9000004922cztM0_level2_quad_clean.evt
Size (bytes)2,061,524,160464,353,920
Size1.9 GB 442.8 MB
Events in quadrant A9,543,9302,918,741
Events in quadrant B11,493,4922,947,088
Events in quadrant C11,032,4492,908,688
Events in quadrant D27,715,3222,616,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07940
B07940
C07940
D07940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0845380
B0939840
C0861700
D01517020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A389282010.516338%
B3892813343.426839%
C389282490.639642%
D38928468812.042746%

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 63245 38936 20 20 0.03% 0.05%
B 63245 38928 50 50 0.08% 0.13%
C 63245 38928 55 55 0.09% 0.14%
D 63245 38927 517 517 0.82% 1.33%

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 15 169 1008554 2210.53 2067 2035 455.3
A 10 83 174648 379.09 2067 2035 455.3
A 9 143 127240 274.98 2067 2035 455.3
B 5 172 2350003 5807.38 2047 2005 404.3
B 5 31 332957 818.55 2047 2005 404.3
B 0 189 322723 793.24 2047 2005 404.3
C 15 214 1552318 3405.1 2011 1998 455.3
C 15 208 650743 1424.9 2011 1998 455.3
C 14 67 362891 792.66 2011 1998 455.3
D 7 223 7501316 16475.04 1917 1858 455.2
D 8 195 4788520 10515.48 1917 1858 455.2
D 10 203 1999138 4387.69 1917 1858 455.2

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