ASTROSAT CZTI

Data Quality Report

Orbit 45502

Creation date: 2024-06-27T23:12:57.343226
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/AS1A13_054T01_9000006098_45502cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45502cztM0_level2_quad_clean.evt
Size (bytes)487,396,800115,704,000
Size464.8 MB 110.3 MB
Events in quadrant A5,852,143776,871
Events in quadrant B3,440,920820,465
Events in quadrant C3,263,698777,792
Events in quadrant D4,981,846675,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219372
B0144342
C0139822
D0193722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64892283.513638%
B64891041.602712%
C6489560.862999%
D64894296.611188%

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 7704 6490 25 25 0.32% 0.39%
B 7704 6490 24 24 0.31% 0.37%
C 7704 6490 12 12 0.16% 0.18%
D 7704 6490 272 272 3.53% 4.19%

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 10 83 2781582 16890.6 789 772 164.6
A 13 252 9566 53.41 789 772 164.6
A 3 137 8741 48.4 789 772 164.6
B 5 172 87206 559.21 795 771 154.6
B 0 186 65791 420.66 795 771 154.6
B 0 189 54448 347.28 795 771 154.6
C 14 254 111009 600.22 785 792 183.6
C 12 2 45272 242.23 785 792 183.6
C 2 14 16761 86.96 785 792 183.6
D 1 52 748485 3939.23 760 738 189.8
D 13 249 492083 2588.47 760 738 189.8
D 11 241 467412 2458.5 760 738 189.8

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