ASTROSAT CZTI

Data Quality Report

Orbit 34295

Creation date: 2022-02-01T16:24:02.501500
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/AS1T04_086T01_9000004890_34295cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34295cztM0_level2_quad_clean.evt
Size (bytes)440,164,80060,580,800
Size419.8 MB 57.8 MB
Events in quadrant A2,488,575362,437
Events in quadrant B3,341,844367,298
Events in quadrant C3,086,672376,061
Events in quadrant D4,048,413352,015

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109473
B0133272
C0123402
D0157122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5381140.260175%
B53811372.545995%
C5381841.561048%
D53811011.876975%

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 7174 5382 6 6 0.08% 0.11%
B 7174 5382 91 91 1.27% 1.69%
C 7174 5382 60 60 0.84% 1.11%
D 7174 5382 91 91 1.27% 1.69%

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 10 83 26898 211.26 621 609 124.4
A 9 143 24192 189.52 621 609 124.4
A 13 6 18572 144.35 621 609 124.4
B 5 172 580504 4876.56 621 605 118.9
B 4 251 133107 1114.25 621 605 118.9
B 0 189 62397 519.63 621 605 118.9
C 15 214 232643 1625.15 613 617 142.8
C 14 254 217473 1518.9 613 617 142.8
C 9 187 117836 821.02 613 617 142.8
D 8 195 897162 5682.28 608 596 157.8
D 12 235 284705 1800.63 608 596 157.8
D 7 223 198767 1255.97 608 596 157.8

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