ASTROSAT CZTI

Data Quality Report

Orbit 18569

Creation date: 2024-06-27T17:51:48.010847
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/AS1A05_167T01_9000002758_18569cztM0_level2.evt modeM0/AS1A05_167T01_9000002758_18569cztM0_level2_quad_clean.evt
Size (bytes)560,966,40069,747,840
Size535.0 MB 66.5 MB
Events in quadrant A3,311,252433,567
Events in quadrant B3,268,259449,739
Events in quadrant C3,264,493438,610
Events in quadrant D6,749,293381,360

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136381
B0135381
C0134731
D0241931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58381382.363823%
B5838861.473107%
C5839961.644117%
D5839105918.136667%

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 7148 5838 46 46 0.64% 0.79%
B 7148 5838 17 17 0.24% 0.29%
C 7149 5839 2 2 0.03% 0.03%
D 7149 5839 951 951 13.30% 16.29%

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 14 111 192755 1197.29 797 783 160.3
A 5 98 35581 217.03 797 783 160.3
A 13 254 10377 59.84 797 783 160.3
B 0 190 82294 549.2 798 779 148.4
B 0 244 63844 424.9 798 779 148.4
B 12 111 16936 108.85 798 779 148.4
C 14 238 124540 683.41 781 791 181.1
C 4 254 83012 454.07 781 791 181.1
C 9 54 8581 43.02 781 791 181.1
D 7 238 2233188 12490.71 748 731 178.7
D 1 52 1565291 8753.79 748 731 178.7
D 14 34 59375 328.12 748 731 178.7

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