ASTROSAT CZTI

Data Quality Report

Orbit 36795

Creation date: 2024-06-27T21:31:46.701766
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/AS1A11_075T01_9000005244_36795cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36795cztM0_level2_quad_clean.evt
Size (bytes)614,960,64089,804,160
Size586.5 MB 85.6 MB
Events in quadrant A2,685,236634,341
Events in quadrant B8,510,046484,296
Events in quadrant C3,444,404639,342
Events in quadrant D3,633,624597,426

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112903
B0289382
C0135072
D0143992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5176290.560278%
B5176229044.242658%
C51761422.743431%
D51762705.216383%

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 7118 5177 14 14 0.20% 0.27%
B 7118 5177 2177 2177 30.58% 42.05%
C 7118 5177 111 111 1.56% 2.14%
D 7118 5177 255 255 3.58% 4.93%

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 223610 1801.11 613 603 123.8
A 13 248 43722 348.25 613 603 123.8
A 9 143 23289 183.22 613 603 123.8
B 12 1 5751675 60411.85 506 495 95.2
B 5 172 205639 2154.88 506 495 95.2
B 0 221 160137 1676.92 506 495 95.2
C 0 207 566439 4042.28 604 609 140.0
C 15 214 233759 1665.62 604 609 140.0
C 0 10 131757 936.92 604 609 140.0
D 12 227 805677 5590.5 594 578 144.0
D 5 222 107405 741.79 594 578 144.0
D 2 250 94828 654.46 594 578 144.0

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