ASTROSAT CZTI

Data Quality Report

Orbit 08481

Creation date: 2024-06-27T15:33:17.106053
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/AS1G07_007T01_9000001196_08481cztM0_level2.evt modeM0/AS1G07_007T01_9000001196_08481cztM0_level2_quad_clean.evt
Size (bytes)479,157,12062,928,000
Size457.0 MB 60.0 MB
Events in quadrant A3,262,114372,523
Events in quadrant B3,460,021376,949
Events in quadrant C3,113,751362,797
Events in quadrant D4,237,442342,837

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135473
B0141312
C0133092
D0168532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6454350.542299%
B6454480.743725%
C6454160.247908%
D64541432.215680%

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 7764 6455 3 3 0.04% 0.05%
B 7764 6454 1 1 0.01% 0.02%
C 7764 6455 0 0 0.00% 0.00%
D 7764 6455 116 116 1.49% 1.80%

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 5 16 34268 199.98 828 812 167.3
A 4 2 21794 125.42 828 812 167.3
A 15 236 19122 109.45 828 812 167.3
B 11 51 52893 330.04 837 821 157.8
B 0 214 51923 323.89 837 821 157.8
B 10 252 47380 295.1 837 821 157.8
C 9 54 8695 42.95 794 798 183.9
C 13 61 6132 29.01 794 798 183.9
C 14 234 4813 21.84 794 798 183.9
D 12 221 825685 4224.94 781 761 195.3
D 1 52 315893 1613.98 781 761 195.3
D 7 71 46547 234.5 781 761 195.3

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