ASTROSAT CZTI

Data Quality Report

Orbit 14919

Creation date: 2024-06-27T17:01:20.450776
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/AS1A04_099T01_9000002204_14919cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14919cztM0_level2_quad_clean.evt
Size (bytes)687,395,52088,139,520
Size655.6 MB 84.1 MB
Events in quadrant A3,079,234590,321
Events in quadrant B10,747,748509,797
Events in quadrant C3,356,274566,233
Events in quadrant D3,201,731556,616

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130633
B0360862
C0138472
D0136882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6385340.532498%
B6385332552.075176%
C6385540.845732%
D6386741.158785%

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 7526 6387 0 0 0.00% 0.00%
B 7526 6387 3027 3027 40.22% 47.39%
C 7526 6387 26 26 0.35% 0.41%
D 7527 6388 53 53 0.70% 0.83%

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 7494 41.38 799 783 162.2
A 0 226 7218 39.68 799 783 162.2
A 12 194 5766 30.73 799 783 162.2
B 10 16 8546760 79022.75 563 550 108.1
B 12 111 12719 112.52 563 550 108.1
B 11 111 10815 94.92 563 550 108.1
C 9 236 217516 1234.89 762 769 175.5
C 3 233 165833 940.43 762 769 175.5
C 13 61 5334 26.01 762 769 175.5
D 7 223 258396 1419.33 760 744 181.5
D 13 249 35853 193.41 760 744 181.5
D 2 234 19792 104.93 760 744 181.5

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