ASTROSAT CZTI

Data Quality Report

Orbit 20160925_G05_243T01_9000000682_level2

Creation date: 2016-10-21T04:58:53.953354
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_243T01_9000000682cztM0_level2_bc.evt modeM0/AS1G05_243T01_9000000682cztM0_level2_quad_clean.evt
Size (bytes)368,976,96049,014,720
Size351.9 MB 46.7 MB
Events in quadrant A1,102,717297,229
Events in quadrant B1,112,585300,560
Events in quadrant C1,057,378300,308
Events in quadrant D7,574,808254,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107810
B0104120
C0101340
D0296380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47132134.519414%
B4712891.888795%
C4713541.145767%
D4712133828.395586%

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 5788 4713 1 1 0.02% 0.02%
B 5787 4711 5 5 0.09% 0.11%
C 5788 4712 0 0 0.00% 0.00%
D 5788 4712 101 101 1.74% 2.14%

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 14 111 104253 1951.69 230 224 53.3
A 0 50 54069 1010.19 230 224 53.3
A 15 174 43608 813.93 230 224 53.3
B 4 80 77919 1645.71 233 227 47.2
B 15 204 62861 1326.74 233 227 47.2
B 10 245 23032 483.07 233 227 47.2
C 1 16 150214 2822.09 230 226 53.1
C 12 4 3322 58.25 230 226 53.1
C 14 67 2767 47.81 230 226 53.1
D 7 237 6575533 123579.27 214 205 53.2
D 4 95 51057 955.73 214 205 53.2
D 11 18 30222 564.15 214 205 53.2

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