ASTROSAT CZTI

Data Quality Report

Orbit 33950

Creation date: 2024-06-27T20:54:37.099695
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/AS1A11_068T02_9000004850_33950cztM0_level2.evt modeM0/AS1A11_068T02_9000004850_33950cztM0_level2_quad_clean.evt
Size (bytes)501,523,20088,113,600
Size478.3 MB 84.0 MB
Events in quadrant A2,755,269574,782
Events in quadrant B3,713,617567,991
Events in quadrant C3,632,512567,216
Events in quadrant D4,680,828539,552

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121363
B0150132
C0143932
D0182702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5992100.166889%
B59922814.689586%
C59921101.835781%
D59923265.440587%

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 7276 5993 0 0 0.00% 0.00%
B 7276 5993 160 160 2.20% 2.67%
C 7276 5993 77 77 1.06% 1.28%
D 7276 5993 246 246 3.38% 4.10%

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 10 83 15133 101.83 706 693 141.8
A 13 254 10318 67.88 706 693 141.8
A 13 6 9458 61.81 706 693 141.8
B 5 172 836080 6273.13 688 670 133.2
B 0 229 48636 360.18 688 670 133.2
B 0 219 30997 227.73 688 670 133.2
C 3 233 410611 2560.97 680 685 160.1
C 0 10 274470 1710.44 680 685 160.1
C 15 214 259150 1614.73 680 685 160.1
D 8 195 883961 5342.37 671 652 165.3
D 2 250 654464 3954.34 671 652 165.3
D 13 249 320667 1935.49 671 652 165.3

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