ASTROSAT CZTI

Data Quality Report

Orbit 20190916_A06_009T05_9000003164_level2

Creation date: 2019-09-17T17:32:29.573105
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/AS1A06_009T05_9000003164cztM0_level2_bc.evt modeM0/AS1A06_009T05_9000003164cztM0_level2_quad_clean.evt
Size (bytes)286,410,240130,063,680
Size273.1 MB 124.0 MB
Events in quadrant A1,986,321893,484
Events in quadrant B1,797,571897,620
Events in quadrant C1,840,181844,904
Events in quadrant D2,578,453828,626

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160670
B0154120
C0159900
D0182040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68231081.582881%
B68231141.670819%
C68231331.949289%
D68231752.564854%

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 8092 6821 0 0 0.00% 0.00%
B 8091 6820 0 0 0.00% 0.00%
C 8092 6821 0 0 0.00% 0.00%
D 8092 6821 9 9 0.11% 0.13%

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 11 47 298198 3140.24 437 431 94.8
A 13 254 10463 105.8 437 431 94.8
A 8 205 3819 35.73 437 431 94.8
B 0 229 40108 483.76 434 427 82.0
B 0 190 25688 307.96 434 427 82.0
B 0 189 15838 187.88 434 427 82.0
C 3 233 272541 2834.59 408 409 96.0
C 13 61 2442 21.18 408 409 96.0
C 14 238 1332 9.61 408 409 96.0
D 7 38 180286 1879.14 419 407 95.7
D 12 235 154583 1610.63 419 407 95.7
D 1 20 135348 1409.69 419 407 95.7

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