ASTROSAT CZTI

Data Quality Report

Orbit 20180203_G08_021T01_9000001880_level2

Creation date: 2018-02-19T09:45:45.201855
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_021T01_9000001880cztM0_level2_bc.evt modeM0/AS1G08_021T01_9000001880cztM0_level2_quad_clean.evt
Size (bytes)2,917,912,3201,009,134,720
Size2.7 GB 962.4 MB
Events in quadrant A16,399,0026,567,491
Events in quadrant B24,256,3626,339,251
Events in quadrant C13,811,9336,519,744
Events in quadrant D28,984,1096,188,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01556720
B01902130
C01468570
D01955050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014660
B014660
C014660
D014660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7218511511.594514%
B7218557137.914387%
C721855500.761931%
D7218533604.654707%

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 115065 72189 6 6 0.01% 0.01%
B 115065 72178 328 328 0.29% 0.45%
C 115065 72188 0 0 0.00% 0.00%
D 115065 72185 672 672 0.58% 0.93%

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 15 239 1706717 2180.27 3568 3501 781.2
A 12 189 386461 490.22 3568 3501 781.2
A 8 15 245731 310.08 3568 3501 781.2
B 4 239 9309330 14254.05 3473 3385 652.9
B 0 214 318446 482.58 3473 3385 652.9
B 3 209 194536 292.79 3473 3385 652.9
C 15 208 57534 69.96 3497 3453 773.0
C 8 128 21839 23.79 3497 3453 773.0
C 13 61 21033 22.74 3497 3453 773.0
D 1 52 12911045 16160.91 3423 3329 798.7
D 10 199 1165250 1454.77 3423 3329 798.7
D 2 136 659194 821.17 3423 3329 798.7

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