ASTROSAT CZTI

Data Quality Report

Orbit 20190822_A05_163T01_9000003118_level2

Creation date: 2019-09-29T03:39:50.721742
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/AS1A05_163T01_9000003118cztM0_level2_bc.evt modeM0/AS1A05_163T01_9000003118cztM0_level2_quad_clean.evt
Size (bytes)6,613,490,8801,812,916,800
Size6.2 GB 1.7 GB
Events in quadrant A30,930,12011,770,400
Events in quadrant B41,619,26711,623,753
Events in quadrant C29,722,74011,339,973
Events in quadrant D88,159,11510,239,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02330
B02330
C02330
D02330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03030750
B03464550
C03033400
D04969360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029520
B029520
C029520
D029520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14502219681.357035%
B14502057353.954627%
C14502025311.745277%
D145022136239.393747%

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 180235 145028 32 32 0.02% 0.02%
B 180234 145022 263 263 0.15% 0.18%
C 180235 145026 2 2 0.00% 0.00%
D 180235 145009 5208 5208 2.89% 3.59%

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 34 449163 266.38 7691 7546 1657.8
A 5 16 364507 215.32 7691 7546 1657.8
A 15 192 347856 205.27 7691 7546 1657.8
B 0 182 7405029 5150.61 7697 7507 1436.2
B 7 220 1878317 1302.57 7697 7507 1436.2
B 0 219 894844 617.82 7697 7507 1436.2
C 7 221 986937 559.16 7431 7397 1751.8
C 9 54 124155 66.65 7431 7397 1751.8
C 13 61 43432 20.57 7431 7397 1751.8
D 1 239 20039274 11934.72 7228 6969 1678.5
D 1 20 19927374 11868.05 7228 6969 1678.5
D 1 52 12070008 7186.84 7228 6969 1678.5

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