ASTROSAT CZTI

Data Quality Report

Orbit 03768

Creation date: 2024-06-27T14:33:26.231080
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/AS1G05_248T01_9000000486_03768cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03768cztM0_level2_quad_clean.evt
Size (bytes)501,442,56083,730,240
Size478.2 MB 79.9 MB
Events in quadrant A4,278,275509,073
Events in quadrant B3,731,356516,974
Events in quadrant C3,128,273513,409
Events in quadrant D3,564,400499,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176662
B0158361
C0146051
D0158961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71292373.324449%
B7129771.080095%
C7129250.350680%
D7129791.108150%

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 7309 7131 118 118 1.61% 1.65%
B 7309 7131 8 8 0.11% 0.11%
C 7309 7131 0 0 0.00% 0.00%
D 7309 7131 40 40 0.55% 0.56%

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 0 118 756779 4496.32 811 790 168.1
A 13 251 260154 1542.59 811 790 168.1
A 0 226 75515 444.43 811 790 168.1
B 15 204 404309 2512.33 828 806 160.6
B 4 81 28264 170.96 828 806 160.6
B 15 54 15866 93.77 828 806 160.6
C 13 61 6622 30.93 798 801 188.2
C 12 4 4347 18.84 798 801 188.2
C 7 235 2287 7.9 798 801 188.2
D 1 84 159927 818.4 796 772 194.5
D 13 223 95063 484.86 796 772 194.5
D 8 112 75294 383.2 796 772 194.5

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
Veto Counter