ASTROSAT CZTI

Data Quality Report

Orbit 47748

Creation date: 2024-07-27T09:56:27.285141
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_004T04_9000006346_47748cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47748cztM0_level2_quad_clean.evt
Size (bytes)471,585,600100,019,520
Size449.7 MB 95.4 MB
Events in quadrant A6,336,506667,313
Events in quadrant B3,937,727664,782
Events in quadrant C2,819,071663,230
Events in quadrant D3,874,682594,148

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02317589
B01619039
C01314343
D01615743

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62881552.465013%
B63013165.015077%
C6298350.555732%
D62982493.953636%

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 7370 6297 27 27 0.37% 0.43%
B 7371 6312 154 154 2.09% 2.44%
C 7371 6303 5 5 0.07% 0.08%
D 7371 6309 203 203 2.75% 3.22%

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 3572496 25319.44 679 665 141.1
A 13 248 64444 452.11 679 665 141.1
A 13 6 45028 314.47 679 665 141.1
B 4 171 810106 6168.24 671 648 131.2
B 12 48 226661 1722.27 671 648 131.2
B 0 200 122868 931.34 671 648 131.2
C 14 254 104780 655.72 669 673 158.8
C 12 2 62980 392.44 669 673 158.8
C 1 3 24533 150.28 669 673 158.8
D 2 165 816613 4914.09 657 636 166.0
D 10 181 341439 2052.43 657 636 166.0
D 2 249 69231 413.1 657 636 166.0

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