ASTROSAT CZTI

Data Quality Report

Orbit 36565

Creation date: 2024-06-27T21:28:27.623805
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_049T02_9000005220_36565cztM0_level2.evt modeM0/AS1A11_049T02_9000005220_36565cztM0_level2_quad_clean.evt
Size (bytes)404,331,84093,985,920
Size385.6 MB 89.6 MB
Events in quadrant A2,792,136637,997
Events in quadrant B3,005,529637,736
Events in quadrant C3,088,499626,685
Events in quadrant D3,022,236596,412

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112373
B0120392
C0122102
D0120492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4954120.242229%
B4954460.928543%
C49541743.512313%
D4954571.150585%

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 7078 4955 2 2 0.03% 0.04%
B 7078 4955 20 20 0.28% 0.40%
C 7078 4955 112 112 1.58% 2.26%
D 7078 4955 45 45 0.64% 0.91%

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 197751 1523.83 658 650 129.3
A 13 6 22015 165.18 658 650 129.3
A 15 223 16798 124.84 658 650 129.3
B 0 182 302408 2498.85 640 626 120.8
B 5 172 54823 448.77 640 626 120.8
B 4 171 40772 332.42 640 626 120.8
C 0 10 416124 2923.93 621 628 142.1
C 15 214 213627 1498.92 621 628 142.1
C 14 254 31117 214.56 621 628 142.1
D 13 249 111650 721.89 635 619 153.8
D 2 153 92606 598.07 635 619 153.8
D 10 199 73736 475.39 635 619 153.8

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