ASTROSAT CZTI

Data Quality Report

Orbit 20170731_G07_047T01_9000001424_level2

Creation date: 2017-09-24T13:20:43.007496
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/AS1G07_047T01_9000001424cztM0_level2.evt modeM0/AS1G07_047T01_9000001424cztM0_level2_quad_clean.evt
Size (bytes)6,350,135,040969,949,440
Size5.9 GB 925.0 MB
Events in quadrant A47,299,5645,987,806
Events in quadrant B40,939,3596,182,961
Events in quadrant C35,638,3856,167,049
Events in quadrant D63,083,6525,591,516

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01320
C01330
D01350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016190
B016280
C016270
D016240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01958670
B01745420
C01629250
D02410860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7959037934.765674%
B7954614801.860559%
C795935590.702323%
D7897052946.703812%

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 95570 80900 2785 2785 2.91% 3.44%
B 95570 80840 455 455 0.48% 0.56%
C 95570 80837 0 0 0.00% 0.00%
D 95570 80336 4399 4399 4.60% 5.48%

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 10888508 5827.09 9247 9049 1867.0
A 15 174 665886 351.8 9247 9049 1867.0
A 8 15 89276 42.97 9247 9049 1867.0
B 4 81 1831904 1021.03 9444 9224 1785.1
B 4 239 514497 283.04 9444 9224 1785.1
B 0 214 495491 272.4 9444 9224 1785.1
C 13 61 68224 28.06 9117 9161 2105.1
C 14 67 44526 16.8 9117 9161 2105.1
C 8 222 40943 15.1 9117 9161 2105.1
D 1 52 17574587 7970.6 8691 8470 2203.9
D 2 16 3935708 1781.98 8691 8470 2203.9
D 8 195 2242003 1013.46 8691 8470 2203.9

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