ASTROSAT CZTI

Data Quality Report

Orbit 47168

Creation date: 2024-06-27T23:32:25.467678
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_003T01_9000006298_47168cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47168cztM0_level2_quad_clean.evt
Size (bytes)479,162,880110,309,760
Size457.0 MB 105.2 MB
Events in quadrant A6,743,504726,435
Events in quadrant B3,527,395760,700
Events in quadrant C3,101,532724,521
Events in quadrant D3,840,056657,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243872
B0152493
C0144002
D0164652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67612784.111818%
B6760981.449704%
C6760751.109467%
D67601912.825444%

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 7856 6762 93 93 1.18% 1.38%
B 7855 6761 37 37 0.47% 0.55%
C 7855 6761 44 44 0.56% 0.65%
D 7855 6761 162 162 2.06% 2.40%

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 3851055 25375.01 732 719 151.7
A 9 191 24977 159.87 732 719 151.7
A 13 254 13493 84.18 732 719 151.7
B 4 171 145972 1003.55 741 719 144.7
B 4 21 138040 948.75 741 719 144.7
B 5 255 92535 634.36 741 719 144.7
C 12 2 113906 661.01 725 728 171.2
C 14 254 87024 504.01 725 728 171.2
C 3 233 32082 183.12 725 728 171.2
D 2 249 555715 3081.59 716 694 180.1
D 1 47 296205 1640.73 716 694 180.1
D 5 171 50068 274.13 716 694 180.1

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