ASTROSAT CZTI

Data Quality Report

Orbit 03645

Creation date: 2024-06-27T14:31:53.480930
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_234T02_9000000474_03645cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03645cztM0_level2_quad_clean.evt
Size (bytes)457,591,68075,911,040
Size436.4 MB 72.4 MB
Events in quadrant A3,259,030466,964
Events in quadrant B3,954,201465,708
Events in quadrant C3,088,804459,452
Events in quadrant D3,110,163448,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140413
B0160092
C0135762
D0138432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65671422.162327%
B65671091.659814%
C6567650.989797%
D6567791.202985%

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 7682 6568 17 17 0.22% 0.26%
B 7682 6568 9 9 0.12% 0.14%
C 7682 6568 1 1 0.01% 0.02%
D 7682 6568 14 14 0.18% 0.21%

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 13 251 132636 817.1 790 773 161.4
A 13 164 39309 238.79 790 773 161.4
A 0 50 19612 116.74 790 773 161.4
B 15 204 357671 2313.9 796 776 154.2
B 4 81 204066 1318.02 796 776 154.2
B 3 0 124962 805.15 796 776 154.2
C 2 53 57216 320.48 760 762 176.2
C 9 247 41065 228.79 760 762 176.2
C 12 4 8984 46.67 760 762 176.2
D 2 37 69251 375.0 761 739 182.7
D 13 239 48245 260.02 761 739 182.7
D 13 223 29802 159.08 761 739 182.7

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