ASTROSAT CZTI

Data Quality Report

Orbit 34124

Creation date: 2024-06-27T20:54:38.554422
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_068T02_9000004850_34124cztM0_level2.evt modeM0/AS1A11_068T02_9000004850_34124cztM0_level2_quad_clean.evt
Size (bytes)82,892,16018,466,560
Size79.1 MB 17.6 MB
Events in quadrant A489,284124,105
Events in quadrant B632,670124,900
Events in quadrant C626,917117,848
Events in quadrant D691,017115,268

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020212
B025181
C024181
D027241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99230.302419%
B992141.411290%
C992333.326613%
D992141.411290%

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 992 992 0 0 0.00% 0.00%
B 992 992 5 5 0.50% 0.50%
C 992 992 18 18 1.81% 1.81%
D 992 992 9 9 0.91% 0.91%

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 9380 336.72 123 120 27.5
A 13 6 2900 101.09 123 120 27.5
A 13 254 1877 63.89 123 120 27.5
B 5 172 77907 3073.2 121 118 25.3
B 0 219 58777 2317.43 121 118 25.3
B 5 173 8814 343.55 121 118 25.3
C 0 10 119410 4101.91 117 117 29.1
C 15 214 46238 1585.88 117 117 29.1
C 12 250 1697 54.33 117 117 29.1
D 8 195 83160 2573.54 120 116 32.3
D 12 233 41658 1287.39 120 116 32.3
D 13 249 27931 861.99 120 116 32.3

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