ASTROSAT CZTI

Data Quality Report

Orbit 11964

Creation date: 2024-06-27T16:20:37.336835
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_124T01_9000001766_11964cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11964cztM0_level2_quad_clean.evt
Size (bytes)1,182,700,800279,711,360
Size1.1 GB 266.8 MB
Events in quadrant A7,953,2811,887,314
Events in quadrant B9,664,9061,891,270
Events in quadrant C6,795,1961,852,385
Events in quadrant D10,327,4341,741,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340712
B0389882
C0321182
D0410592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159401911.198243%
B159405693.569636%
C15940670.420326%
D159407614.774153%

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 17066 15941 7 7 0.04% 0.04%
B 17066 15941 335 335 1.96% 2.10%
C 17066 15942 1 1 0.01% 0.01%
D 17066 15941 601 601 3.52% 3.77%

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 288249 785.23 1794 1758 364.8
A 8 15 175045 474.95 1794 1758 364.8
A 6 254 155301 420.84 1794 1758 364.8
B 4 239 1851482 5479.87 1786 1738 337.6
B 15 204 337699 995.29 1786 1738 337.6
B 11 51 140842 412.1 1786 1738 337.6
C 14 234 13026 28.29 1737 1739 398.9
C 13 61 12775 27.66 1737 1739 398.9
C 0 207 11635 24.8 1737 1739 398.9
D 1 52 2015087 4989.9 1693 1644 403.5
D 8 195 750108 1854.91 1693 1644 403.5
D 10 199 312453 770.27 1693 1644 403.5

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