ASTROSAT CZTI

Data Quality Report

Orbit 20191029_A07_007T05_9000003274_level2

Creation date: 2019-11-06T11:55:43.065904
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/AS1A07_007T05_9000003274cztM0_level2_bc.evt modeM0/AS1A07_007T05_9000003274cztM0_level2_quad_clean.evt
Size (bytes)1,955,646,720667,385,280
Size1.8 GB 636.5 MB
Events in quadrant A10,898,3184,296,330
Events in quadrant B11,404,3404,353,478
Events in quadrant C10,730,5134,135,943
Events in quadrant D22,675,2403,886,879

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010500
B010500
C010500
D010500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01071760
B01088790
C01077830
D01449000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516053150.610406%
B516054610.893324%
C516055911.145238%
D5160537617.288053%

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 59185 51605 0 0 0.00% 0.00%
B 59185 51606 12 12 0.02% 0.02%
C 59185 51608 1 1 0.00% 0.00%
D 59185 51606 1812 1812 3.06% 3.51%

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 79020 126.27 2802 2755 604.0
A 15 174 50212 78.58 2802 2755 604.0
A 5 16 47479 74.05 2802 2755 604.0
B 3 64 246791 464.74 2819 2752 525.1
B 0 197 90205 166.54 2819 2752 525.1
B 0 190 87100 160.63 2819 2752 525.1
C 0 239 309976 487.48 2681 2675 630.4
C 10 22 96779 149.28 2681 2675 630.4
C 8 128 16939 22.63 2681 2675 630.4
D 1 52 10023940 16179.52 2678 2585 619.4
D 2 16 516768 830.15 2678 2585 619.4
D 2 136 466768 749.43 2678 2585 619.4

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