ASTROSAT CZTI

Data Quality Report

Orbit 00157

Creation date: 2024-06-27T13:57:09.279533
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/AS1P01_120T01_9000000006_00157cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00157cztM0_level2_quad_clean.evt
Size (bytes)991,031,04063,846,720
Size945.1 MB 60.9 MB
Events in quadrant A7,457,713386,678
Events in quadrant B7,456,012392,805
Events in quadrant C6,735,525391,061
Events in quadrant D7,985,554362,586

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261872
B0261851
C0240291
D0278221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5721320.559343%
B5721310.541863%
C572140.069918%
D57212704.719455%

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 7314 5723 380 380 5.20% 6.64%
B 7314 5723 257 257 3.51% 4.49%
C 7314 5723 98 98 1.34% 1.71%
D 7314 5723 659 659 9.01% 11.51%

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 14 201 82951 201.9 1833 1819 401.8
A 0 96 76382 185.55 1833 1819 401.8
A 0 166 55122 132.64 1833 1819 401.8
B 10 199 194263 449.91 1837 1849 427.7
B 14 50 73838 168.33 1837 1849 427.7
B 5 216 42714 95.55 1837 1849 427.7
C 0 188 34726 69.72 1689 1750 473.0
C 10 17 17433 33.16 1689 1750 473.0
C 7 205 16791 31.8 1689 1750 473.0
D 10 202 828324 1671.16 1639 1696 494.6
D 14 53 529473 1066.98 1639 1696 494.6
D 13 21 69138 136.34 1639 1696 494.6

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