ASTROSAT CZTI

Data Quality Report

Orbit 20180114_A04_141T01_9000001848_level2

Creation date: 2018-07-24T12:45:49.118375
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_141T01_9000001848cztM0_level2_bc.evt modeM0/AS1A04_141T01_9000001848cztM0_level2_quad_clean.evt
Size (bytes)3,110,976,000838,215,360
Size2.9 GB 799.4 MB
Events in quadrant A21,644,4625,239,796
Events in quadrant B20,159,1205,216,134
Events in quadrant C14,275,7485,328,298
Events in quadrant D33,437,9294,867,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01738880
B01690610
C01435040
D02017970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014100
B014100
C014100
D014100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6904117162.485480%
B6904136135.233122%
C690417111.029823%
D6904149527.172550%

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 80352 69032 17 17 0.02% 0.02%
B 80352 69032 92 92 0.11% 0.13%
C 80352 69039 8 8 0.01% 0.01%
D 80352 69038 3195 3195 3.98% 4.63%

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 13 251 4617802 6071.46 3475 3405 760.0
A 15 239 2077170 2728.59 3475 3405 760.0
A 1 162 628337 822.26 3475 3405 760.0
B 4 239 4929268 7564.77 3491 3397 651.2
B 3 64 773737 1183.03 3491 3397 651.2
B 0 187 248160 375.89 3491 3397 651.2
C 15 208 586741 764.88 3479 3429 762.6
C 14 234 46142 56.01 3479 3429 762.6
C 13 61 20872 22.87 3479 3429 762.6
D 1 52 18885029 24510.93 3385 3268 770.3
D 8 195 298555 383.32 3385 3268 770.3
D 13 104 273497 350.79 3385 3268 770.3

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