ASTROSAT CZTI

Data Quality Report

Orbit 37172

Creation date: 2024-06-27T21:36:29.377057
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_079T01_9000005284_37172cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37172cztM0_level2_quad_clean.evt
Size (bytes)452,289,60066,375,360
Size431.3 MB 63.3 MB
Events in quadrant A2,860,239428,832
Events in quadrant B3,352,742417,693
Events in quadrant C3,049,467417,143
Events in quadrant D4,088,093387,402

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114553
B0129602
C0119172
D0154282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5117180.351769%
B51172244.377565%
C5117500.977135%
D51173426.683604%

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 7120 5118 5 5 0.07% 0.10%
B 7120 5118 171 171 2.40% 3.34%
C 7120 5118 43 43 0.60% 0.84%
D 7120 5118 298 298 4.19% 5.82%

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 251172 1891.26 666 656 132.5
A 9 143 30016 221.65 666 656 132.5
A 13 254 7296 50.13 666 656 132.5
B 5 200 423084 3441.98 648 634 122.7
B 5 172 309344 2515.27 648 634 122.7
B 4 232 48556 390.45 648 634 122.7
C 15 214 222805 1531.73 633 641 145.0
C 0 10 182922 1256.75 633 641 145.0
C 10 49 83139 568.79 633 641 145.0
D 2 250 450954 2978.07 624 609 151.2
D 2 249 339515 2241.14 624 609 151.2
D 12 6 334433 2207.53 624 609 151.2

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