ASTROSAT CZTI

Data Quality Report

Orbit 13072

Creation date: 2024-06-27T16:36:12.664744
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/AS1A04_176T02_9000001924_13072cztM0_level2.evt modeM0/AS1A04_176T02_9000001924_13072cztM0_level2_quad_clean.evt
Size (bytes)872,781,12060,422,400
Size832.3 MB 57.6 MB
Events in quadrant A3,027,496414,017
Events in quadrant B5,265,933395,752
Events in quadrant C2,875,809419,338
Events in quadrant D14,849,056170,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128242
B0196481
C0127631
D0482261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61321081.761252%
B613293515.247880%
C6132801.304631%
D6132506182.534247%

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 7173 6134 0 0 0.00% 0.00%
B 7173 6134 611 611 8.52% 9.96%
C 7173 6134 0 0 0.00% 0.00%
D 7173 6133 5015 5015 69.91% 81.77%

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 12 189 55391 351.37 764 750 155.5
A 1 162 17418 107.18 764 750 155.5
A 0 226 6955 39.9 764 750 155.5
B 4 239 1268719 9330.54 715 699 135.9
B 0 85 1033460 7599.42 715 699 135.9
B 3 64 71131 518.26 715 699 135.9
C 14 234 7421 39.07 735 738 171.1
C 13 61 5212 26.15 735 738 171.1
C 3 202 1877 6.66 735 738 171.1
D 1 52 13033837 133354.03 407 397 97.7
D 1 255 149018 1520.64 407 397 97.7
D 14 34 33437 338.05 407 397 97.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter