ASTROSAT CZTI

Data Quality Report

Orbit 46538

Creation date: 2024-06-27T23:24:27.463184
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/AS1A13_091T07_9000006226_46538cztM0_level2.fits modeM0/AS1A13_091T07_9000006226_46538cztM0_level2_quad_clean.evt
Size (bytes)622,874,880121,656,960
Size594.0 MB 116.0 MB
Events in quadrant A7,271,669815,280
Events in quadrant B6,784,269812,647
Events in quadrant C3,616,965802,254
Events in quadrant D4,791,785720,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267143
B0254770
C0163940
D0194830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76551531.998694%
B76564345.668757%
C7656560.731452%
D76562393.121735%

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 7655 7655 19 19 0.25% 0.25%
B 7656 7656 261 261 3.41% 3.41%
C 7656 7656 44 44 0.57% 0.57%
D 7656 7656 205 205 2.68% 2.68%

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 3485444 19302.66 867 849 180.5
A 9 191 318170 1757.78 867 849 180.5
A 13 248 58971 321.96 867 849 180.5
B 10 128 1503954 8829.11 851 827 170.2
B 0 189 815634 4786.04 851 827 170.2
B 3 112 771122 4524.58 851 827 170.2
C 14 254 141812 703.45 849 855 200.4
C 12 249 82520 407.55 849 855 200.4
C 3 233 39044 190.58 849 855 200.4
D 2 37 443382 2090.66 845 820 211.7
D 13 249 324010 1526.75 845 820 211.7
D 8 176 277607 1307.54 845 820 211.7

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