ASTROSAT CZTI

Data Quality Report

Orbit 20160501_G05_221T01_9000000438_level2

Creation date: 2018-05-17T07:07:51.312650
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_221T01_9000000438cztM0_level2.evt modeM0/AS1G05_221T01_9000000438cztM0_level2_quad_clean.evt
Size (bytes)14,294,131,2002,072,010,240
Size13.3 GB 1.9 GB
Events in quadrant A84,801,91313,309,422
Events in quadrant B86,066,60013,532,165
Events in quadrant C169,806,81511,997,767
Events in quadrant D81,341,88012,834,249

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03658610
B03615030
C06174080
D03601550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032860
B032860
C032860
D032860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16174750883.145653%
B16174729251.808380%
C1616943479021.515950%
D16159628671.774178%

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 183348 161759 2280 2280 1.24% 1.41%
B 183348 161757 325 325 0.18% 0.20%
C 183347 161700 33062 33062 18.03% 20.45%
D 183347 161616 1214 1214 0.66% 0.75%

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 0 199 6698512 1792.66 18347 17938 3726.6
A 0 50 3167876 845.25 18347 17938 3726.6
A 0 118 2602633 693.57 18347 17938 3726.6
B 15 204 9396709 2644.62 18824 18388 3546.2
B 2 249 1442475 401.58 18824 18388 3546.2
B 3 0 409916 110.41 18824 18388 3546.2
C 12 206 86101591 22435.86 16630 16723 3836.9
C 1 192 9694895 2522.37 16630 16723 3836.9
C 14 223 5118603 1329.68 16630 16723 3836.9
D 13 223 4190433 970.51 17842 17306 4299.9
D 13 120 2918647 674.74 17842 17306 4299.9
D 5 233 1438714 330.57 17842 17306 4299.9

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