ASTROSAT CZTI

Data Quality Report

Orbit 23622

Creation date: 2024-06-27T18:56:54.231980
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_178T01_9000003488_23622cztM0_level2.evt modeM0/AS1T03_178T01_9000003488_23622cztM0_level2_quad_clean.evt
Size (bytes)684,734,40096,744,960
Size653.0 MB 92.3 MB
Events in quadrant A3,218,170657,189
Events in quadrant B3,699,323687,749
Events in quadrant C3,394,320662,321
Events in quadrant D9,995,205478,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132771
B0148501
C0136961
D0338252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6350360.566929%
B63501131.779528%
C6350761.196850%
D6350286445.102362%

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 7670 6350 0 0 0.00% 0.00%
B 7670 6350 23 23 0.30% 0.36%
C 7670 6350 0 0 0.00% 0.00%
D 7670 6350 2804 2804 36.56% 44.16%

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 13 254 9233 50.48 835 819 166.7
A 0 226 7073 37.52 835 819 166.7
A 3 137 6929 36.66 835 819 166.7
B 3 64 256794 1622.24 849 830 157.8
B 0 189 66057 413.39 849 830 157.8
B 0 229 43734 271.92 849 830 157.8
C 14 238 132061 687.7 829 839 190.8
C 7 247 15836 78.59 829 839 190.8
C 10 9 8580 40.57 829 839 190.8
D 1 52 7462622 48367.14 638 622 154.3
D 12 233 130285 840.45 638 622 154.3
D 2 234 17837 111.58 638 622 154.3

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