ASTROSAT CZTI

Data Quality Report

Orbit 16583

Creation date: 2024-06-27T17:24:40.980110
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/AS1T03_020T01_9000002444_16583cztM0_level2.evt modeM0/AS1T03_020T01_9000002444_16583cztM0_level2_quad_clean.evt
Size (bytes)1,508,201,280208,379,520
Size1.4 GB 198.7 MB
Events in quadrant A8,256,2051,345,685
Events in quadrant B8,807,7411,369,730
Events in quadrant C18,336,7291,257,741
Events in quadrant D9,181,0041,217,021

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358054
B0365883
C0661493
D0390443

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162403612.222906%
B162402561.576355%
C16240205612.660099%
D1624013418.257389%

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 19001 16244 154 154 0.81% 0.95%
B 19001 16244 20 20 0.11% 0.12%
C 19001 16244 726 726 3.82% 4.47%
D 19001 16243 317 317 1.67% 1.95%

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 15 174 766602 1996.55 1918 1876 383.0
A 9 143 105862 271.49 1918 1876 383.0
A 0 226 17171 39.93 1918 1876 383.0
B 15 35 429354 1171.13 1930 1879 365.0
B 0 85 287290 781.93 1930 1879 365.0
B 0 229 125939 339.88 1930 1879 365.0
C 3 233 10999880 26436.38 1800 1809 416.0
C 14 238 276215 659.6 1800 1809 416.0
C 7 247 40368 92.69 1800 1809 416.0
D 1 52 1307030 3042.72 1777 1725 429.0
D 7 38 579687 1347.25 1777 1725 429.0
D 10 70 391627 908.88 1777 1725 429.0

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