ASTROSAT CZTI

Data Quality Report

Orbit 20191123_T03_149T07_9000003332_level2

Creation date: 2019-11-23T15:52:12.840953
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/AS1T03_149T07_9000003332cztM0_level2_bc.evt modeM0/AS1T03_149T07_9000003332cztM0_level2_quad_clean.evt
Size (bytes)126,944,64039,913,920
Size121.1 MB 38.1 MB
Events in quadrant A700,924241,659
Events in quadrant B1,334,812236,255
Events in quadrant C723,649234,680
Events in quadrant D824,962233,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074110
B095460
C075220
D077470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A369740.108196%
B36971965.301596%
C3697160.432783%
D3697130.351636%

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 3697 3697 0 0 0.00% 0.00%
B 3697 3697 40 40 1.08% 1.08%
C 3697 3697 0 0 0.00% 0.00%
D 3697 3697 2 2 0.05% 0.05%

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 13 254 4240 95.27 181 178 42.6
A 0 226 1144 22.66 181 178 42.6
A 12 194 1092 21.44 181 178 42.6
B 10 245 629898 16832.8 180 175 37.4
B 0 190 5941 154.13 180 175 37.4
B 0 214 4530 116.41 180 175 37.4
C 10 22 40063 891.81 177 175 44.7
C 13 61 1029 19.09 177 175 44.7
C 3 9 688 11.47 177 175 44.7
D 1 52 81121 1801.82 181 174 44.9
D 13 172 20171 445.12 181 174 44.9
D 2 234 14780 325.12 181 174 44.9

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