ASTROSAT CZTI

Data Quality Report

Orbit 03490

Creation date: 2024-06-27T14:30:03.960720
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_245T01_9000000460_03490cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03490cztM0_level2_quad_clean.evt
Size (bytes)509,063,04073,535,040
Size485.5 MB 70.1 MB
Events in quadrant A3,213,020456,701
Events in quadrant B3,161,502464,049
Events in quadrant C5,820,828409,521
Events in quadrant D2,782,158444,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142583
B0138302
C0217492
D0133602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64661151.778534%
B6466390.603155%
C6466121618.806062%
D6466200.309310%

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 7521 6467 80 80 1.06% 1.24%
B 7521 6467 0 0 0.00% 0.00%
C 7521 6467 1064 1064 14.15% 16.45%
D 7521 6467 8 8 0.11% 0.12%

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 50 370423 2445.56 731 715 151.2
A 0 118 19844 126.54 731 715 151.2
A 0 226 9545 58.41 731 715 151.2
B 15 204 198443 1372.75 748 731 144.0
B 4 81 16921 112.41 748 731 144.0
B 0 229 16486 109.39 748 731 144.0
C 7 220 3221738 21463.85 643 646 150.1
C 1 192 33353 217.94 643 646 150.1
C 12 80 18627 119.82 643 646 150.1
D 13 239 48800 277.38 715 693 173.4
D 13 223 12763 69.59 715 693 173.4
D 2 14 10939 59.08 715 693 173.4

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
Veto Counter