ASTROSAT CZTI

Data Quality Report

Orbit 16879

Creation date: 2024-06-27T17:29:10.731664
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/AS1A05_074T02_9000002504_16879cztM0_level2.evt modeM0/AS1A05_074T02_9000002504_16879cztM0_level2_quad_clean.evt
Size (bytes)579,703,68077,281,920
Size552.8 MB 73.7 MB
Events in quadrant A3,272,987487,427
Events in quadrant B3,525,837493,797
Events in quadrant C3,294,050471,449
Events in quadrant D7,012,645423,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139013
B0145662
C0140122
D0253342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66541301.953712%
B66541692.539826%
C66541832.750225%
D665492813.946498%

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 7625 6656 0 0 0.00% 0.00%
B 7625 6656 2 2 0.03% 0.03%
C 7625 6656 0 0 0.00% 0.00%
D 7625 6655 720 720 9.44% 10.82%

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 0 226 7644 39.81 850 832 171.1
A 3 137 6181 31.26 850 832 171.1
A 12 194 6177 31.24 850 832 171.1
B 10 16 81992 503.4 847 827 161.2
B 4 216 52966 323.37 847 827 161.2
B 15 35 29821 179.82 847 827 161.2
C 14 238 125665 662.48 809 815 188.5
C 5 112 9450 45.82 809 815 188.5
C 3 233 5731 26.09 809 815 188.5
D 1 52 3814204 20027.93 788 765 190.4
D 11 66 164717 861.07 788 765 190.4
D 2 234 26667 136.04 788 765 190.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter