ASTROSAT CZTI

Data Quality Report

Orbit 36190

Creation date: 2024-06-27T21:23:29.100209
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_097T17_9000005170_36190cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36190cztM0_level2_quad_clean.evt
Size (bytes)367,626,24057,473,280
Size350.6 MB 54.8 MB
Events in quadrant A2,454,637352,039
Events in quadrant B2,709,956361,486
Events in quadrant C2,811,490350,923
Events in quadrant D2,824,920332,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102953
B0111712
C0111842
D0117482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4887190.388787%
B4887551.125435%
C4887731.493759%
D48871142.332719%

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 7009 4888 11 11 0.16% 0.23%
B 7009 4888 31 31 0.44% 0.63%
C 7009 4888 66 66 0.94% 1.35%
D 7009 4888 94 94 1.34% 1.92%

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 10 83 161465 1399.24 570 560 115.0
A 9 143 56959 490.45 570 560 115.0
A 8 144 21880 185.4 570 560 115.0
B 5 172 297838 2731.24 570 554 108.8
B 5 236 86919 793.46 570 554 108.8
B 0 213 64827 590.5 570 554 108.8
C 15 214 223183 1731.5 556 559 128.6
C 0 10 170729 1323.53 556 559 128.6
C 4 254 109423 846.71 556 559 128.6
D 13 249 260770 1944.33 547 532 133.8
D 2 250 184347 1373.34 547 532 133.8
D 13 171 71061 526.95 547 532 133.8

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