ASTROSAT CZTI

Data Quality Report

Orbit 31188

Creation date: 2024-06-27T20:24:29.362323
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/AS1A10_058T02_9000004510_31188cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31188cztM0_level2_quad_clean.evt
Size (bytes)686,943,360109,287,360
Size655.1 MB 104.2 MB
Events in quadrant A3,748,237713,141
Events in quadrant B5,949,068710,783
Events in quadrant C4,207,143675,248
Events in quadrant D6,371,984667,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160322
B0236802
C0173642
D0251782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7811530.678530%
B78121381.766513%
C78122533.238607%
D78122042.611367%

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 9386 7813 0 0 0.00% 0.00%
B 9387 7814 8 8 0.09% 0.10%
C 9387 7814 55 55 0.59% 0.70%
D 9387 7814 25 25 0.27% 0.32%

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 13 254 15966 76.97 968 948 195.1
A 3 137 10329 48.08 968 948 195.1
A 0 226 7902 35.64 968 948 195.1
B 6 159 2099584 11384.32 953 927 184.3
B 10 247 40132 212.67 953 927 184.3
B 15 33 27803 145.79 953 927 184.3
C 0 10 259060 1183.78 919 921 218.1
C 10 22 173015 789.2 919 921 218.1
C 14 238 149154 679.77 919 921 218.1
D 8 195 2774422 12082.57 924 901 229.5
D 2 250 33018 139.91 924 901 229.5
D 2 234 28983 122.34 924 901 229.5

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