ASTROSAT CZTI

Data Quality Report

Orbit 46570

Creation date: 2024-06-27T23:24:53.170602
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/AS1C07_001T10_9000006232_46570cztM0_level2.fits modeM0/AS1C07_001T10_9000006232_46570cztM0_level2_quad_clean.evt
Size (bytes)1,486,880,640278,291,520
Size1.4 GB 265.4 MB
Events in quadrant A16,560,8531,878,950
Events in quadrant B9,492,7181,931,726
Events in quadrant C7,971,1931,903,718
Events in quadrant D19,604,1051,451,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0614283
B0407173
C0374763
D0710743

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182715072.774889%
B182713051.669312%
C182721520.831874%
D18272327117.901708%

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 19637 18272 39 39 0.20% 0.21%
B 19637 18276 84 84 0.43% 0.46%
C 19638 18274 13 13 0.07% 0.07%
D 19638 18273 2526 2526 12.86% 13.82%

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 10 83 8533032 20995.77 1980 1937 406.3
A 7 3 142732 346.51 1980 1937 406.3
A 9 191 53524 126.96 1980 1937 406.3
B 2 2 683832 1778.18 1983 1918 383.5
B 15 201 383393 994.75 1983 1918 383.5
B 0 245 152451 392.53 1983 1918 383.5
C 2 14 98196 209.36 1977 1984 459.6
C 3 233 66188 139.71 1977 1984 459.6
C 12 250 39746 82.17 1977 1984 459.6
D 13 138 7039724 15151.25 1862 1804 464.5
D 1 52 3125569 6724.85 1862 1804 464.5
D 2 120 677143 1453.87 1862 1804 464.5

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