ASTROSAT CZTI

Data Quality Report

Orbit 15876

Creation date: 2024-06-27T17:14:38.710012
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_143T01_9000002344_15876cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15876cztM0_level2_quad_clean.evt
Size (bytes)495,486,72086,328,000
Size472.5 MB 82.3 MB
Events in quadrant A4,529,877539,314
Events in quadrant B3,496,226565,441
Events in quadrant C3,389,670536,445
Events in quadrant D3,161,785532,594

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177783
B0145152
C0141722
D0136572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63113836.068769%
B63111402.218349%
C63111241.964823%
D6311600.950721%

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 8727 6313 172 172 1.97% 2.72%
B 8727 6314 27 27 0.31% 0.43%
C 8727 6314 4 4 0.05% 0.06%
D 8727 6314 8 8 0.09% 0.13%

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 15 239 1360515 8330.88 815 799 163.2
A 13 248 21560 127.2 815 799 163.2
A 9 143 12230 70.04 815 799 163.2
B 5 65 179768 1138.93 836 819 157.1
B 12 111 17688 107.36 836 819 157.1
B 11 111 14987 90.17 836 819 157.1
C 14 238 125953 670.72 801 808 186.6
C 3 233 56455 298.24 801 808 186.6
C 0 207 38501 202.02 801 808 186.6
D 10 70 43011 212.17 812 790 199.0
D 2 234 26134 127.36 812 790 199.0
D 1 52 14934 71.08 812 790 199.0

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