ASTROSAT CZTI

Data Quality Report

Orbit 24155

Creation date: 2024-06-27T19:02:51.557263
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_047T06_9000003576_24155cztM0_level2.evt modeM0/AS1A07_047T06_9000003576_24155cztM0_level2_quad_clean.evt
Size (bytes)491,607,360136,831,680
Size468.8 MB 130.5 MB
Events in quadrant A3,249,010940,920
Events in quadrant B3,372,399957,854
Events in quadrant C3,407,761903,500
Events in quadrant D4,409,679880,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138212
B0142192
C0142632
D0175302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6616630.952237%
B6617981.481034%
C66171091.647272%
D66171702.569140%

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 8721 6616 0 0 0.00% 0.00%
B 8722 6618 14 14 0.16% 0.21%
C 8722 6617 3 3 0.03% 0.05%
D 8722 6617 79 79 0.91% 1.19%

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 13 254 11149 61.44 843 825 168.0
A 0 226 7140 37.58 843 825 168.0
A 3 137 7084 37.25 843 825 168.0
B 5 172 51132 321.5 841 820 156.5
B 0 189 23886 147.39 841 820 156.5
B 12 111 18311 111.77 841 820 156.5
C 14 238 131544 700.85 810 815 186.5
C 3 233 44108 232.1 810 815 186.5
C 0 207 22703 117.34 810 815 186.5
D 7 238 721636 3648.11 816 792 197.6
D 8 195 354901 1792.1 816 792 197.6
D 1 52 190002 957.57 816 792 197.6

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