ASTROSAT CZTI

Data Quality Report

Orbit 24668

Creation date: 2024-06-27T19:08:34.202063
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/AS1T03_191T01_9000003618_24668cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24668cztM0_level2_quad_clean.evt
Size (bytes)580,227,840135,213,120
Size553.3 MB 128.9 MB
Events in quadrant A3,285,100940,990
Events in quadrant B3,417,887940,519
Events in quadrant C3,318,566892,084
Events in quadrant D7,074,467832,288

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143842
B0146372
C0144142
D0258372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7025360.512456%
B7026660.939368%
C7026670.953601%
D7026108015.371477%

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 7690 7027 1 1 0.01% 0.01%
B 7691 7028 0 0 0.00% 0.00%
C 7691 7028 0 0 0.00% 0.00%
D 7691 7028 1017 1017 13.22% 14.47%

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 13 254 12835 70.65 849 832 169.9
A 3 137 7676 40.28 849 832 169.9
A 0 226 7464 39.04 849 832 169.9
B 7 202 58217 361.94 838 817 158.6
B 0 189 32452 199.48 838 817 158.6
B 0 190 22749 138.29 838 817 158.6
C 14 238 129184 692.53 800 803 185.4
C 7 247 56581 300.89 800 803 185.4
C 2 16 8041 39.04 800 803 185.4
D 1 52 3763514 19656.42 786 764 191.4
D 12 235 184729 961.02 786 764 191.4
D 8 195 66154 341.59 786 764 191.4

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