ASTROSAT CZTI

Data Quality Report

Orbit 18468

Creation date: 2024-06-27T17:50:07.115189
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/AS1A05_072T02_9000002736_18468cztM0_level2.evt modeM0/AS1A05_072T02_9000002736_18468cztM0_level2_quad_clean.evt
Size (bytes)470,903,040108,933,120
Size449.1 MB 103.9 MB
Events in quadrant A3,452,981716,230
Events in quadrant B3,843,445735,373
Events in quadrant C3,263,250718,647
Events in quadrant D3,278,294693,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142522
B0154392
C0136122
D0138672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6239661.057862%
B62382183.494710%
C6238671.074062%
D6238330.529016%

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 7584 6239 17 17 0.22% 0.27%
B 7583 6239 117 117 1.54% 1.88%
C 7583 6239 0 0 0.00% 0.00%
D 7583 6239 20 20 0.26% 0.32%

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 279527 1712.96 812 797 162.7
A 15 174 40091 241.49 812 797 162.7
A 13 254 7682 42.31 812 797 162.7
B 10 245 605430 3926.31 817 799 154.0
B 12 111 17334 107.37 817 799 154.0
B 11 111 14994 92.18 817 799 154.0
C 14 238 124810 668.06 798 806 185.6
C 9 54 13560 68.71 798 806 185.6
C 3 233 12250 61.65 798 806 185.6
D 7 96 46600 237.01 799 778 193.3
D 7 38 43585 221.41 799 778 193.3
D 8 230 31818 160.55 799 778 193.3

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