ASTROSAT CZTI

Data Quality Report

Orbit 21424

Creation date: 2024-06-27T18:27:40.150662
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_140T01_9000003160_21424cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21424cztM0_level2_quad_clean.evt
Size (bytes)505,244,160114,068,160
Size481.8 MB 108.8 MB
Events in quadrant A3,504,783767,220
Events in quadrant B3,440,238767,165
Events in quadrant C3,667,002735,560
Events in quadrant D4,235,989718,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144582
B0143792
C0151512
D0168822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6682901.346902%
B6683811.212031%
C66821121.676145%
D66821442.155043%

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 7827 6682 0 0 0.00% 0.00%
B 7828 6683 3 3 0.04% 0.04%
C 7827 6683 1 1 0.01% 0.01%
D 7827 6682 117 117 1.49% 1.75%

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 5 168 113294 642.53 874 858 175.0
A 11 47 18354 99.98 874 858 175.0
A 13 254 10995 57.93 874 858 175.0
B 0 190 30574 183.75 859 840 161.8
B 0 230 19552 115.64 859 840 161.8
B 12 111 18653 110.08 859 840 161.8
C 3 233 312716 1657.44 820 827 188.2
C 14 238 129231 682.37 820 827 188.2
C 10 91 21297 108.78 820 827 188.2
D 1 52 369193 1820.09 842 819 202.4
D 14 35 179118 880.95 842 819 202.4
D 12 235 167564 823.87 842 819 202.4

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