ASTROSAT CZTI

Data Quality Report

Orbit 20210703_C06_010T01_9000004504_level2

Creation date: 2021-07-05T12:41:41.733015
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/AS1C06_010T01_9000004504cztM0_level2_bc.evt modeM0/AS1C06_010T01_9000004504cztM0_level2_quad_clean.evt
Size (bytes)880,433,280282,867,840
Size839.6 MB 269.8 MB
Events in quadrant A3,101,4701,961,641
Events in quadrant B7,683,7141,914,985
Events in quadrant C3,158,2291,866,342
Events in quadrant D11,695,8701,788,485

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305110
B0470320
C0310370
D0584380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15020650.432756%
B150203502.330226%
C150201500.998668%
D1502012038.009321%

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 16864 15019 1 1 0.01% 0.01%
B 16864 15020 1 1 0.01% 0.01%
C 16864 15020 11 11 0.07% 0.07%
D 16864 15019 343 343 2.03% 2.28%

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 15 174 27718 156.4 786 773 172.3
A 13 254 25998 146.42 786 773 172.3
A 11 47 22362 125.31 786 773 172.3
B 6 159 4071489 26925.51 774 754 151.2
B 12 18 239854 1581.51 774 754 151.2
B 15 33 129231 849.8 774 754 151.2
C 0 10 189568 1044.99 744 740 180.7
C 3 233 30914 166.99 744 740 180.7
C 2 114 28578 154.06 744 740 180.7
D 8 195 6418914 33276.03 746 726 192.9
D 13 174 1761191 9127.39 746 726 192.9
D 12 233 258229 1335.06 746 726 192.9

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