ASTROSAT CZTI

Data Quality Report

Orbit 20211103_A11_080T01_9000004756_level2_test1

Creation date: 2022-08-03T12:54:31.947074
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/AS1A11_080T01_9000004756cztM0_level2_bc.evt modeM0/AS1A11_080T01_9000004756cztM0_level2_quad_clean.evt
Size (bytes)1,906,536,960528,765,120
Size1.8 GB 504.3 MB
Events in quadrant A7,466,7483,596,831
Events in quadrant B11,821,7033,462,963
Events in quadrant C8,924,0113,486,319
Events in quadrant D27,156,9763,076,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07140
B07160
C07130
D07160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01360
C01350
D01370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706920
B0899590
C0755870
D01360120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34852290.083209%
B3480519195.513576%
C348484631.328627%
D34783457813.161602%

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 122197 34975 2 2 0.00% 0.01%
B 122199 34890 142 142 0.12% 0.41%
C 122199 34971 70 70 0.06% 0.20%
D 122198 34887 2152 2152 1.76% 6.17%

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 47 79961 182.83 1865 1840 427.3
A 13 254 62306 141.51 1865 1840 427.3
A 13 6 49465 111.46 1865 1840 427.3
B 5 172 3751346 10065.42 1819 1787 372.5
B 0 219 268285 715.39 1819 1787 372.5
B 0 229 127111 336.42 1819 1787 372.5
C 0 10 858251 2028.76 1794 1790 422.2
C 7 221 315518 743.15 1794 1790 422.2
C 1 241 264202 621.59 1794 1790 422.2
D 8 195 5710769 12254.61 1704 1671 465.9
D 7 223 3492173 7492.38 1704 1671 465.9
D 12 227 2828633 6068.09 1704 1671 465.9

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