ASTROSAT CZTI

Data Quality Report

Orbit 12897

Creation date: 2024-06-27T16:33:41.464952
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_116T01_9000001896_12897cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12897cztM0_level2_quad_clean.evt
Size (bytes)512,020,800134,233,920
Size488.3 MB 128.0 MB
Events in quadrant A3,486,193927,815
Events in quadrant B4,842,030879,165
Events in quadrant C3,224,041921,009
Events in quadrant D3,508,584879,628

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145603
B0186022
C0138572
D0147732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562620.944834%
B656268910.499848%
C6562590.899116%
D65621281.950625%

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 7918 6564 0 0 0.00% 0.00%
B 7918 6563 349 349 4.41% 5.32%
C 7918 6564 0 0 0.00% 0.00%
D 7918 6564 77 77 0.97% 1.17%

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 1 162 42759 246.53 855 840 170.0
A 15 222 31540 180.55 855 840 170.0
A 13 248 29628 169.3 855 840 170.0
B 4 239 1434599 9795.4 800 782 146.4
B 3 209 94073 637.34 800 782 146.4
B 0 85 58326 393.12 800 782 146.4
C 4 112 20397 105.88 821 826 184.8
C 13 61 6055 28.29 821 826 184.8
C 12 4 2345 8.22 821 826 184.8
D 1 52 277305 1440.54 820 798 191.9
D 2 234 26943 136.21 820 798 191.9
D 10 253 26396 133.36 820 798 191.9

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