ASTROSAT CZTI

Data Quality Report

Orbit 35474

Creation date: 2022-04-21T03:17:56.030855
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/AS1T04_095T01_9000005080_35474cztM0_level2.evt modeM0/AS1T04_095T01_9000005080_35474cztM0_level2_quad_clean.evt
Size (bytes)964,555,20086,679,360
Size919.9 MB 82.7 MB
Events in quadrant A7,233,796586,618
Events in quadrant B5,518,818637,020
Events in quadrant C12,673,545362,662
Events in quadrant D3,416,370650,846

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251653
B0200592
C0414172
D0137302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5485181733.126709%
B548590716.536007%
C5485439880.182315%
D54851242.260711%

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 7128 5486 1631 1631 22.88% 29.73%
B 7128 5486 677 677 9.50% 12.34%
C 7128 5486 3874 3874 54.35% 70.62%
D 7128 5486 107 107 1.50% 1.95%

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 15 169 4893685 43511.3 554 544 112.5
A 10 83 132900 1176.95 554 544 112.5
A 8 6 30576 267.05 554 544 112.5
B 5 236 2265062 20671.36 581 566 109.5
B 5 200 523005 4769.06 581 566 109.5
B 5 172 333934 3043.14 581 566 109.5
C 4 254 10442767 120382.77 373 375 86.7
C 0 10 390970 4502.89 373 375 86.7
C 15 214 143159 1646.05 373 375 86.7
D 12 233 295659 2017.19 605 589 146.3
D 2 152 168074 1144.98 605 589 146.3
D 2 153 148314 1009.89 605 589 146.3

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