ASTROSAT CZTI

Data Quality Report

Orbit 14951

Creation date: 2024-06-27T17:01:43.579529
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/AS1T02_056T01_9000002210_14951cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14951cztM0_level2_quad_clean.evt
Size (bytes)681,408,00068,184,000
Size649.8 MB 65.0 MB
Events in quadrant A3,400,592448,357
Events in quadrant B5,135,709375,226
Events in quadrant C3,279,830433,148
Events in quadrant D8,398,711371,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138553
B0191502
C0133052
D0292842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6235520.834002%
B623587914.097835%
C6235300.481155%
D6235139122.309543%

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 7576 6237 0 0 0.00% 0.00%
B 7576 6236 616 616 8.13% 9.88%
C 7576 6237 0 0 0.00% 0.00%
D 7576 6237 1395 1395 18.41% 22.37%

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 12 189 66484 385.81 852 835 170.2
A 3 1 30324 173.3 852 835 170.2
A 1 162 13400 73.84 852 835 170.2
B 10 16 1991892 14010.55 768 753 142.1
B 3 64 50192 347.87 768 753 142.1
B 0 219 37955 261.77 768 753 142.1
C 3 233 141225 762.34 804 812 184.2
C 13 61 5771 26.92 804 812 184.2
C 3 202 1951 6.18 804 812 184.2
D 7 254 5213718 28995.97 760 741 179.8
D 12 110 200330 1110.16 760 741 179.8
D 7 223 33889 184.38 760 741 179.8

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