ASTROSAT CZTI

Data Quality Report

Orbit 21804

Creation date: 2024-06-27T18:32:26.646938
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/AS1A07_006T02_9000003228_21804cztM0_level2.evt modeM0/AS1A07_006T02_9000003228_21804cztM0_level2_quad_clean.evt
Size (bytes)529,211,52086,270,400
Size504.7 MB 82.3 MB
Events in quadrant A3,554,752529,781
Events in quadrant B3,842,610537,495
Events in quadrant C3,571,876522,514
Events in quadrant D4,546,613498,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153731
B0160631
C0153571
D0185001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75261271.687483%
B75271902.524246%
C75261662.205687%
D75262122.816901%

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 7796 7527 0 0 0.00% 0.00%
B 7797 7527 38 38 0.49% 0.50%
C 7796 7526 0 0 0.00% 0.00%
D 7796 7527 93 93 1.19% 1.24%

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 14 235 21339 110.37 915 894 185.2
A 13 254 14145 71.53 915 894 185.2
A 0 226 8058 38.67 915 894 185.2
B 3 64 192325 1083.73 916 892 176.6
B 12 111 21093 114.36 916 892 176.6
B 11 111 18378 98.99 916 892 176.6
C 14 238 138521 666.17 879 882 206.6
C 13 61 6318 26.31 879 882 206.6
C 10 91 4521 17.61 879 882 206.6
D 1 52 830231 3834.65 884 856 216.3
D 13 104 155578 715.36 884 856 216.3
D 13 153 149649 687.95 884 856 216.3

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