ASTROSAT CZTI

Data Quality Report

Orbit 39494

Creation date: 2024-06-27T22:05:17.954818
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/AS1C07_001T02_9000005486_39494cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39494cztM0_level2_quad_clean.evt
Size (bytes)395,965,44089,256,960
Size377.6 MB 85.1 MB
Events in quadrant A4,648,108576,972
Events in quadrant B2,971,884622,354
Events in quadrant C3,334,546582,957
Events in quadrant D3,271,232532,122

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01751634
B0129809
C01361212
D0138443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55463646.563289%
B5550410.738739%
C5549851.531808%
D55541572.826792%

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 7046 5552 302 302 4.29% 5.44%
B 7046 5554 14 14 0.20% 0.25%
C 7046 5554 77 77 1.09% 1.39%
D 7046 5556 126 126 1.79% 2.27%

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 6 10 989514 8378.21 575 562 118.0
A 7 192 955393 8089.14 575 562 118.0
A 10 83 440673 3728.53 575 562 118.0
B 5 172 642054 5684.63 584 567 112.8
B 5 255 17156 147.01 584 567 112.8
B 12 111 14126 120.15 584 567 112.8
C 15 208 526964 4044.01 566 570 130.2
C 15 214 234017 1793.45 566 570 130.2
C 3 233 231738 1775.94 566 570 130.2
D 13 249 503669 3617.75 565 549 139.1
D 12 227 260293 1867.72 565 549 139.1
D 2 120 140490 1006.26 565 549 139.1

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