ASTROSAT CZTI

Data Quality Report

Orbit 18478

Creation date: 2024-06-27T17:50:33.840703
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_082T12_9000002738_18478cztM0_level2.evt modeM0/AS1A05_082T12_9000002738_18478cztM0_level2_quad_clean.evt
Size (bytes)538,528,32067,596,480
Size513.6 MB 64.5 MB
Events in quadrant A3,379,463396,131
Events in quadrant B4,708,741399,383
Events in quadrant C4,393,148385,321
Events in quadrant D3,364,299389,305

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143932
B0184912
C0175793
D0145432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6833911.331772%
B68333795.546612%
C68321512.210187%
D6832781.141686%

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 8488 6833 1 1 0.01% 0.01%
B 8488 6833 193 193 2.27% 2.82%
C 8487 6832 3 3 0.04% 0.04%
D 8487 6832 2 2 0.02% 0.03%

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 15 174 64462 370.43 850 829 171.8
A 4 2 35329 200.84 850 829 171.8
A 0 226 7423 38.39 850 829 171.8
B 10 245 1284053 7883.51 839 817 162.8
B 15 222 59552 360.84 839 817 162.8
B 4 216 25410 151.09 839 817 162.8
C 3 233 1060574 5508.01 818 823 192.4
C 14 238 125429 647.63 818 823 192.4
C 8 128 10698 51.32 818 823 192.4
D 7 38 70338 338.58 837 812 205.3
D 7 96 32514 154.39 837 812 205.3
D 2 234 32374 153.7 837 812 205.3

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