ASTROSAT CZTI

Data Quality Report

Orbit 48206

Creation date: 2024-08-27T15:14:09.541745
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/AS1C09_004T05_9000006416_48206cztM0_level2.fits modeM0/AS1C09_004T05_9000006416_48206cztM0_level2_quad_clean.evt
Size (bytes)537,321,600104,826,240
Size512.4 MB 100.0 MB
Events in quadrant A8,848,101874,655
Events in quadrant B1,475,95555,989
Events in quadrant C3,690,740865,191
Events in quadrant D5,220,921796,373

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321710
B089630
C0173160
D0212450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83112072.490675%
B8312831099.975938%
C8312160.192493%
D8312861.034649%

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 8311 8311 0 0 0.00% 0.00%
B 8311 8311 4 4 0.05% 0.05%
C 8312 8312 4 4 0.05% 0.05%
D 8312 8312 50 50 0.60% 0.60%

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 4984554 26468.01 903 882 188.3
A 14 235 193072 1020.71 903 882 188.3
A 0 31 88798 466.92 903 882 188.3
B 2 177 1143326 82677.55 60 58 13.8
B 5 255 52913 3822.31 60 58 13.8
B 4 21 35411 2556.62 60 58 13.8
C 12 2 104151 486.51 901 905 212.2
C 6 64 34142 156.62 901 905 212.2
C 14 254 24818 112.68 901 905 212.2
D 2 165 1231285 5479.85 894 865 224.5
D 12 233 147280 652.08 894 865 224.5
D 4 222 109380 483.29 894 865 224.5

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