ASTROSAT CZTI

Data Quality Report

Orbit 19101

Creation date: 2024-06-27T17:59:03.772828
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_098T01_9000002836_19101cztM0_level2.evt modeM0/AS1T03_098T01_9000002836_19101cztM0_level2_quad_clean.evt
Size (bytes)567,984,96063,979,200
Size541.7 MB 61.0 MB
Events in quadrant A3,235,059374,546
Events in quadrant B3,334,774379,845
Events in quadrant C3,258,309370,931
Events in quadrant D6,930,793356,518

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135481
B0140401
C0137111
D0249551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520650.996933%
B6521701.073455%
C65201011.549080%
D6520138521.242331%

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 7445 6520 0 0 0.00% 0.00%
B 7446 6521 6 6 0.08% 0.09%
C 7445 6520 8 8 0.11% 0.12%
D 7445 6520 1014 1014 13.62% 15.55%

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 8 192 88750 539.15 805 788 163.1
A 4 2 33311 199.34 805 788 163.1
A 11 47 7588 41.68 805 788 163.1
B 3 112 57690 369.72 803 783 153.9
B 4 216 44192 282.03 803 783 153.9
B 7 220 43736 279.06 803 783 153.9
C 14 238 121258 661.66 774 778 182.1
C 3 233 61124 331.41 774 778 182.1
C 0 207 57787 313.09 774 778 182.1
D 7 238 3062925 17849.89 699 678 171.6
D 11 176 729137 4246.2 699 678 171.6
D 1 52 281242 1635.41 699 678 171.6

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