ASTROSAT CZTI

Data Quality Report

Orbit 33978

Creation date: 2024-06-27T20:55:00.130904
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/AS1A11_046T07_9000004862_33978cztM0_level2.evt modeM0/AS1A11_046T07_9000004862_33978cztM0_level2_quad_clean.evt
Size (bytes)588,844,80075,885,120
Size561.6 MB 72.4 MB
Events in quadrant A4,119,185480,848
Events in quadrant B4,263,786477,913
Events in quadrant C3,740,847480,611
Events in quadrant D5,317,841453,864

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160053
B0164592
C0146102
D0197412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5791101117.458125%
B57913636.268347%
C57912394.127094%
D57912494.299776%

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 8717 5792 256 256 2.94% 4.42%
B 8717 5793 255 255 2.93% 4.40%
C 8717 5793 187 187 2.15% 3.23%
D 8717 5793 202 202 2.32% 3.49%

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 15 169 1858695 15795.18 579 568 117.6
A 13 6 14131 115.29 579 568 117.6
A 10 83 9874 79.11 579 568 117.6
B 5 172 1281159 9823.57 673 655 130.4
B 0 182 97588 743.63 673 655 130.4
B 0 190 75205 571.92 673 655 130.4
C 4 254 435396 2828.41 660 665 153.7
C 0 10 329945 2142.33 660 665 153.7
C 15 214 250061 1622.6 660 665 153.7
D 8 195 1332851 8062.77 662 642 165.2
D 2 250 527892 3191.01 662 642 165.2
D 13 249 340114 2054.55 662 642 165.2

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