ASTROSAT CZTI

Data Quality Report

Orbit 17236

Creation date: 2024-06-27T17:33:56.243739
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/AS1T03_063T01_9000002550_17236cztM0_level2.evt modeM0/AS1T03_063T01_9000002550_17236cztM0_level2_quad_clean.evt
Size (bytes)501,220,80066,199,680
Size478.0 MB 63.1 MB
Events in quadrant A3,394,979393,398
Events in quadrant B3,687,656395,283
Events in quadrant C3,539,961378,835
Events in quadrant D4,104,630371,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142942
B0151842
C0146992
D0166162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6664681.020408%
B6664811.215486%
C6664671.005402%
D66641011.515606%

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 7794 6664 21 21 0.27% 0.32%
B 7794 6665 26 26 0.33% 0.39%
C 7794 6665 4 4 0.05% 0.06%
D 7794 6665 67 67 0.86% 1.01%

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 87100 499.15 858 840 172.8
A 0 226 7874 40.7 858 840 172.8
A 0 23 7681 39.59 858 840 172.8
B 0 189 129146 797.74 851 833 160.8
B 7 220 119092 735.24 851 833 160.8
B 0 197 61293 375.89 851 833 160.8
C 3 233 129294 673.62 824 829 190.7
C 14 238 127940 666.52 824 829 190.7
C 5 112 63374 327.96 824 829 190.7
D 1 52 734578 3602.28 837 813 203.7
D 13 189 83605 406.45 837 813 203.7
D 10 70 34562 165.68 837 813 203.7

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