ASTROSAT CZTI

Data Quality Report

Orbit 33724

Creation date: 2024-06-27T20:51:49.781977
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/AS1A11_086T01_9000004816_33724cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33724cztM0_level2_quad_clean.evt
Size (bytes)815,880,96096,629,760
Size778.1 MB 92.2 MB
Events in quadrant A4,775,959573,208
Events in quadrant B6,288,350568,647
Events in quadrant C5,378,054567,889
Events in quadrant D7,611,385544,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203843
B0246912
C0214342
D0292752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9692530.546843%
B96924834.983492%
C9692870.897648%
D96926426.624020%

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 13009 9694 29 29 0.22% 0.30%
B 13009 9694 385 385 2.96% 3.97%
C 13009 9694 75 75 0.58% 0.77%
D 13009 9694 590 590 4.54% 6.09%

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 15 169 137767 588.97 1170 1148 232.0
A 15 237 89212 379.65 1170 1148 232.0
A 13 254 18268 73.8 1170 1148 232.0
B 5 172 1437982 6613.25 1143 1114 217.3
B 15 85 80624 365.95 1143 1114 217.3
B 0 245 66802 302.33 1143 1114 217.3
C 15 214 430011 1635.44 1137 1145 262.2
C 0 10 223521 848.01 1137 1145 262.2
C 0 239 122439 462.54 1137 1145 262.2
D 2 250 1316131 4775.28 1117 1087 275.4
D 8 195 661734 2398.99 1117 1087 275.4
D 12 16 463116 1677.75 1117 1087 275.4

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