ASTROSAT CZTI

Data Quality Report

Orbit 20151022_P01_161T05_9000000050_level2

Creation date: 2016-09-06T18:00:12.160822
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/AS1P01_161T05_9000000050cztM0_level2_bc.evt modeM0/AS1P01_161T05_9000000050cztM0_level2_quad_clean.evt
Size (bytes)313,551,36047,309,760
Size299.0 MB 45.1 MB
Events in quadrant A4,487,280275,687
Events in quadrant B1,746,769297,523
Events in quadrant C902,792297,672
Events in quadrant D2,079,445277,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284960
B0199110
C0162360
D0200830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A402548712.099379%
B40253167.850932%
C4025240.596273%
D40251353.354037%

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 4024 4024 385 385 9.57% 9.57%
B 4024 4024 94 94 2.34% 2.34%
C 4024 4024 0 0 0.00% 0.00%
D 4024 4024 27 27 0.67% 0.67%

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 15 216 3273573 86239.46 172 168 38.0
A 0 69 340424 8964.21 172 168 38.0
A 0 238 88807 2335.24 172 168 38.0
B 2 2 729945 21876.53 177 173 33.4
B 0 234 79598 2380.94 177 173 33.4
B 7 220 74407 2225.33 177 173 33.4
C 4 253 110623 2741.78 178 175 40.3
C 1 1 40756 1007.39 178 175 40.3
C 3 159 8911 216.86 178 175 40.3
D 7 85 738831 17857.19 174 170 41.4
D 2 152 182110 4398.42 174 170 41.4
D 14 52 69069 1665.64 174 170 41.4

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