ASTROSAT CZTI

Data Quality Report

Orbit 20210615_C06_004T01_9000004466_level2

Creation date: 2021-06-17T20:03:42.396095
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/AS1C06_004T01_9000004466cztM0_level2_bc.evt modeM0/AS1C06_004T01_9000004466cztM0_level2_quad_clean.evt
Size (bytes)3,475,203,8401,024,148,160
Size3.2 GB 976.7 MB
Events in quadrant A15,391,0856,769,855
Events in quadrant B39,734,0436,701,200
Events in quadrant C16,366,0396,352,008
Events in quadrant D29,019,5916,419,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01462670
B02267430
C01569120
D01909160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014240
B014240
C014240
D014240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A696659081.303380%
B6966521453.079021%
C6966552997.606402%
D6966527083.887174%

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 81080 69658 7 7 0.01% 0.01%
B 81080 69654 19 19 0.02% 0.03%
C 81080 69649 38 38 0.05% 0.05%
D 81080 69657 214 214 0.26% 0.31%

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 534556 648.13 3811 3758 819.0
A 13 254 124317 147.21 3811 3758 819.0
A 11 47 106351 125.27 3811 3758 819.0
B 6 159 19742388 27516.5 3807 3727 717.3
B 6 36 3036952 4228.44 3807 3727 717.3
B 0 190 1066016 1480.87 3807 3727 717.3
C 3 233 961626 1140.03 3547 3544 840.4
C 0 10 743272 880.21 3547 3544 840.4
C 14 254 507933 600.18 3547 3544 840.4
D 8 195 7294400 8638.26 3669 3578 844.0
D 1 52 2097482 2480.88 3669 3578 844.0
D 12 218 1698407 2008.05 3669 3578 844.0

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