ASTROSAT CZTI

Data Quality Report

Orbit 20160610_G05_194T01_9000000490_level2

Creation date: 2017-10-31T17:18:04.792453
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/AS1G05_194T01_9000000490cztM0_level2.evt modeM0/AS1G05_194T01_9000000490cztM0_level2_quad_clean.evt
Size (bytes)3,357,584,640533,295,360
Size3.1 GB 508.6 MB
Events in quadrant A26,866,5553,318,898
Events in quadrant B23,909,7623,349,361
Events in quadrant C24,790,4743,242,802
Events in quadrant D23,069,3533,137,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01092730
B0999950
C01051830
D01010470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09240
B09240
C09240
D09240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A452099532.107987%
B452085531.223235%
C452097581.676657%
D452098981.986330%

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 64149 45214 377 377 0.59% 0.83%
B 64149 45212 31 31 0.05% 0.07%
C 64149 45215 405 405 0.63% 0.90%
D 64149 45214 581 581 0.91% 1.29%

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 4566703 4202.04 5372 5269 1085.5
A 0 50 810632 741.91 5372 5269 1085.5
A 0 118 563142 513.92 5372 5269 1085.5
B 15 204 1427880 1371.5 5438 5317 1037.2
B 14 167 798039 764.27 5438 5317 1037.2
B 0 173 319337 302.75 5438 5317 1037.2
C 2 53 4286414 3577.68 5159 5187 1196.6
C 9 247 160830 130.07 5159 5187 1196.6
C 10 65 80044 62.56 5159 5187 1196.6
D 2 32 1570561 1254.51 5159 5008 1247.9
D 13 223 493622 391.53 5159 5008 1247.9
D 13 239 485869 385.32 5159 5008 1247.9

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