ASTROSAT CZTI

Data Quality Report

Orbit 18643

Creation date: 2024-06-27T17:52:52.176455
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/AS1A06_003T01_9000002786_18643cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18643cztM0_level2_quad_clean.evt
Size (bytes)465,972,48079,669,440
Size444.4 MB 76.0 MB
Events in quadrant A3,341,984500,295
Events in quadrant B3,248,785512,147
Events in quadrant C3,164,725503,422
Events in quadrant D3,959,609487,889

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137931
B0133491
C0130961
D0156913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5844971.659822%
B58451031.762190%
C58451021.745081%
D58442935.013689%

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 7199 5844 16 16 0.22% 0.27%
B 7200 5845 11 11 0.15% 0.19%
C 7200 5845 0 0 0.00% 0.00%
D 7199 5845 171 171 2.38% 2.93%

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 0 13 302356 1951.49 783 768 154.5
A 6 16 11253 67.85 783 768 154.5
A 13 254 8479 49.9 783 768 154.5
B 7 220 64721 436.39 783 764 146.6
B 0 197 37131 248.14 783 764 146.6
B 0 198 31729 211.28 783 764 146.6
C 14 238 120333 674.55 770 778 177.2
C 3 233 36201 199.86 770 778 177.2
C 13 61 5372 25.92 770 778 177.2
D 1 52 760214 4116.76 769 750 184.5
D 7 238 205118 1107.8 769 750 184.5
D 2 234 24524 128.87 769 750 184.5

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