ASTROSAT CZTI

Data Quality Report

Orbit 10670

Creation date: 2024-06-27T16:02:15.656694
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/AS1A03_097T01_9000001540_10670cztM0_level2.evt modeM0/AS1A03_097T01_9000001540_10670cztM0_level2_quad_clean.evt
Size (bytes)521,043,84090,293,760
Size496.9 MB 86.1 MB
Events in quadrant A3,252,825571,867
Events in quadrant B4,458,150572,076
Events in quadrant C3,470,943572,133
Events in quadrant D4,133,407540,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144753
B0179302
C0149702
D0168382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6845640.934989%
B68452984.353543%
C68451011.475530%
D68451011.475530%

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 7580 6846 13 13 0.17% 0.19%
B 7580 6846 156 156 2.06% 2.28%
C 7580 6846 48 48 0.63% 0.70%
D 7580 6846 49 49 0.65% 0.72%

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 4 2 127996 782.96 794 777 162.5
A 15 174 34309 206.37 794 777 162.5
A 1 162 14536 84.68 794 777 162.5
B 4 239 1209220 7944.5 792 772 152.1
B 15 185 48169 311.59 792 772 152.1
B 0 214 41224 265.94 792 772 152.1
C 4 254 420909 2328.52 773 778 180.4
C 4 175 24448 131.19 773 778 180.4
C 14 234 8136 40.78 773 778 180.4
D 2 16 339737 1840.06 768 748 184.2
D 8 195 331771 1796.82 768 748 184.2
D 10 199 174389 942.54 768 748 184.2

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