ASTROSAT CZTI

Data Quality Report

Orbit 14439

Creation date: 2024-06-27T16:55:10.892055
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/AS1G08_025T01_9000002130_14439cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14439cztM0_level2_quad_clean.evt
Size (bytes)1,428,413,760215,130,240
Size1.3 GB 205.2 MB
Events in quadrant A9,234,9961,349,281
Events in quadrant B9,896,8181,314,749
Events in quadrant C11,492,1481,293,514
Events in quadrant D11,380,2131,276,066

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389555
B0412734
C0460344
D0465494

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185983121.677600%
B185984052.177654%
C185983231.736746%
D185998134.371203%

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 20449 18599 32 32 0.16% 0.17%
B 20449 18599 91 91 0.45% 0.49%
C 20449 18599 17 17 0.08% 0.09%
D 20450 18600 530 530 2.59% 2.85%

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 8 15 320359 690.49 2254 2205 460.8
A 12 189 115934 246.83 2254 2205 460.8
A 4 2 110477 234.98 2254 2205 460.8
B 3 209 314246 735.23 2222 2167 424.5
B 0 182 231650 540.64 2222 2167 424.5
B 0 219 210852 491.64 2222 2167 424.5
C 3 233 3042879 6095.96 2154 2157 498.8
C 14 234 46009 87.91 2154 2157 498.8
C 13 61 15584 26.92 2154 2157 498.8
D 10 199 1048268 2001.28 2151 2095 522.8
D 2 120 966665 1845.18 2151 2095 522.8
D 12 110 530763 1011.32 2151 2095 522.8

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