ASTROSAT CZTI

Data Quality Report

Orbit 31755

Creation date: 2024-06-27T20:32:17.904657
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_034T01_9000004632_31755cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31755cztM0_level2_quad_clean.evt
Size (bytes)814,236,48054,711,360
Size776.5 MB 52.2 MB
Events in quadrant A9,785,887243,459
Events in quadrant B5,747,675302,719
Events in quadrant C4,186,524292,390
Events in quadrant D4,433,470296,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074
B062
C051
D052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018026
B018129
C018325
D018329

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420787911
B0277855015
C0203593377
D0217423966

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7373247833.609114%
B74431091.464463%
C75361451.924098%
D7532801.062135%

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 13614 7529 1481 1481 10.88% 19.67%
B 13613 7618 14 14 0.10% 0.18%
C 13615 7726 28 28 0.21% 0.36%
D 13614 7716 43 43 0.32% 0.56%

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 6862799 44592.78 757 743 153.9
A 13 254 10801 65.36 757 743 153.9
A 3 137 7731 45.41 757 743 153.9
B 6 159 2023916 11603.98 894 869 174.3
B 10 245 76262 432.44 894 869 174.3
B 15 33 61586 348.26 894 869 174.3
C 0 10 409983 1978.44 877 882 206.8
C 3 233 186535 897.83 877 882 206.8
C 14 238 140907 677.17 877 882 206.8
D 8 195 566988 2642.67 891 870 214.2
D 12 233 330482 1538.64 891 870 214.2
D 2 250 66624 306.94 891 870 214.2

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