ASTROSAT CZTI

Data Quality Report

Orbit 13361

Creation date: 2024-06-27T16:39:39.768810
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/AS1G08_082T01_9000001986_13361cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13361cztM0_level2_quad_clean.evt
Size (bytes)420,160,320100,984,320
Size400.7 MB 96.3 MB
Events in quadrant A3,058,440662,403
Events in quadrant B3,083,379687,989
Events in quadrant C3,123,557658,302
Events in quadrant D3,041,714620,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130753
B0131192
C0132812
D0131832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6144260.423177%
B6144300.488281%
C6144150.244141%
D6144130.211589%

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 7425 6146 16 16 0.22% 0.26%
B 7425 6146 1 1 0.01% 0.02%
C 7425 6146 3 3 0.04% 0.05%
D 7425 6146 8 8 0.11% 0.13%

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 9 143 83297 545.07 757 743 151.5
A 1 162 19630 124.7 757 743 151.5
A 8 15 11370 70.17 757 743 151.5
B 3 64 33298 225.48 769 751 144.3
B 3 209 16854 111.56 769 751 144.3
B 12 111 16262 107.46 769 751 144.3
C 14 220 165745 973.82 737 743 169.4
C 3 233 80458 470.47 737 743 169.4
C 13 61 5306 26.93 737 743 169.4
D 1 52 111534 643.79 722 701 172.2
D 8 195 88668 510.97 722 701 172.2
D 5 222 46832 267.96 722 701 172.2

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