ASTROSAT CZTI

Data Quality Report

Orbit 13122

Creation date: 2024-06-27T16:36:35.512374
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/AS1A04_017T01_9000001932_13122cztM0_level2.evt modeM0/AS1A04_017T01_9000001932_13122cztM0_level2_quad_clean.evt
Size (bytes)1,522,062,720211,492,800
Size1.4 GB 201.7 MB
Events in quadrant A10,227,7971,342,286
Events in quadrant B17,814,7711,092,147
Events in quadrant C8,171,2841,397,736
Events in quadrant D8,659,8891,325,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423494
B0649493
C0369823
D0387293

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180887594.196152%
B18088451024.933658%
C180881250.691066%
D180882771.531402%

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 20069 18092 364 364 1.81% 2.01%
B 20068 18090 2421 2421 12.06% 13.38%
C 20069 18092 2 2 0.01% 0.01%
D 20069 18092 118 118 0.59% 0.65%

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 0 23 714598 1671.12 2100 2052 426.4
A 15 223 545562 1274.68 2100 2052 426.4
A 15 239 239912 557.85 2100 2052 426.4
B 4 239 8380479 24337.41 1811 1765 344.3
B 0 85 1579527 4582.88 1811 1765 344.3
B 3 64 527011 1525.67 1811 1765 344.3
C 12 4 19833 36.59 2083 2095 484.8
C 13 61 14968 26.55 2083 2095 484.8
C 0 207 14218 25.01 2083 2095 484.8
D 1 52 606973 1201.42 2071 2013 503.5
D 13 122 67749 130.55 2071 2013 503.5
D 2 234 65229 125.54 2071 2013 503.5

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