ASTROSAT CZTI

Data Quality Report

Orbit 36178

Creation date: 2022-06-07T14:41:00.188016
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/AS1A10_071T50_9000005166_36178cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36178cztM0_level2_quad_clean.evt
Size (bytes)500,970,24066,061,440
Size477.8 MB 63.0 MB
Events in quadrant A2,722,061419,406
Events in quadrant B3,407,077422,930
Events in quadrant C3,377,245415,971
Events in quadrant D5,287,351351,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114633
B0137092
C0132162
D0193892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558060.107527%
B55801372.455197%
C5580791.415771%
D558083314.928315%

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 7073 5581 1 1 0.01% 0.02%
B 7073 5581 79 79 1.12% 1.42%
C 7073 5581 66 66 0.93% 1.18%
D 7073 5580 733 733 10.36% 13.14%

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 176237 1334.05 646 632 131.6
A 8 144 30050 223.48 646 632 131.6
A 13 254 9735 69.15 646 632 131.6
B 5 236 378479 3042.26 637 619 124.2
B 5 172 304618 2447.59 637 619 124.2
B 0 213 77454 618.62 637 619 124.2
C 0 207 279447 1899.47 626 631 146.8
C 0 10 264309 1796.34 626 631 146.8
C 15 214 256099 1740.41 626 631 146.8
D 2 250 1706533 11921.36 581 565 143.1
D 12 235 775486 5415.18 581 565 143.1
D 13 249 221403 1543.22 581 565 143.1

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