ASTROSAT CZTI

Data Quality Report

Orbit 20180609_G08_055T02_9000002148_level2

Creation date: 2018-06-11T19:33:00.026216
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/AS1G08_055T02_9000002148cztM0_level2_bc.evt modeM0/AS1G08_055T02_9000002148cztM0_level2_quad_clean.evt
Size (bytes)5,933,695,6801,460,620,800
Size5.5 GB 1.4 GB
Events in quadrant A84,479,1749,135,367
Events in quadrant B23,967,4509,525,802
Events in quadrant C31,781,4179,349,021
Events in quadrant D32,378,6359,057,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021340
B021340
C021340
D021340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04171060
B02254190
C02522530
D02661520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10467160345.764729%
B10467115841.513313%
C10467111381.087216%
D10467155465.298507%

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 123907 104666 16 16 0.01% 0.02%
B 123907 104663 82 82 0.07% 0.08%
C 123907 104668 0 0 0.00% 0.00%
D 123907 104663 379 379 0.31% 0.36%

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 0 23 58057631 48780.62 5484 5381 1190.1
A 0 226 3345392 2806.57 5484 5381 1190.1
A 8 15 706947 589.52 5484 5381 1190.1
B 10 16 930738 880.74 5634 5483 1050.5
B 0 189 277354 258.79 5634 5483 1050.5
B 0 205 250158 232.9 5634 5483 1050.5
C 3 233 10147345 8468.01 5494 5429 1197.7
C 10 22 41212 29.88 5494 5429 1197.7
C 3 232 36776 26.17 5494 5429 1197.7
D 10 199 5502437 4429.05 5423 5276 1241.2
D 12 110 4215120 3391.86 5423 5276 1241.2
D 2 152 487297 388.36 5423 5276 1241.2

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