ASTROSAT CZTI

Data Quality Report

Orbit 16901

Creation date: 2024-06-27T17:29:16.453290
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/AS1A05_004T03_9000002508_16901cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16901cztM0_level2_quad_clean.evt
Size (bytes)609,393,60047,139,840
Size581.2 MB 45.0 MB
Events in quadrant A7,278,900223,503
Events in quadrant B3,337,009254,920
Events in quadrant C3,142,044245,443
Events in quadrant D4,246,111238,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261082
B0142572
C0136192
D0171962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6661129819.486564%
B6662440.660462%
C6662400.600420%
D66621832.746923%

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 7677 6662 917 917 11.94% 13.76%
B 7678 6664 14 14 0.18% 0.21%
C 7678 6664 0 0 0.00% 0.00%
D 7678 6664 97 97 1.26% 1.46%

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 4403453 30379.32 720 706 144.9
A 12 189 92778 635.3 720 706 144.9
A 4 2 9668 61.84 720 706 144.9
B 15 35 132951 882.61 787 766 149.8
B 0 219 43949 288.34 787 766 149.8
B 4 216 23791 153.74 787 766 149.8
C 14 238 116456 651.4 759 765 177.6
C 3 233 59797 332.38 759 765 177.6
C 13 61 5298 25.52 759 765 177.6
D 1 52 1159297 6298.83 754 731 183.9
D 12 235 88973 479.75 754 731 183.9
D 2 33 85566 461.23 754 731 183.9

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