ASTROSAT CZTI

Data Quality Report

Orbit 20170316_G06_117T01_9000001086_level2

Creation date: 2017-09-23T10:25:36.458586
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/AS1G06_117T01_9000001086cztM0_level2.evt modeM0/AS1G06_117T01_9000001086cztM0_level2_quad_clean.evt
Size (bytes)7,028,115,8401,310,736,960
Size6.5 GB 1.2 GB
Events in quadrant A49,447,9388,073,619
Events in quadrant B51,021,5278,264,786
Events in quadrant C48,202,4898,262,534
Events in quadrant D57,015,2907,831,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02215890
B02238410
C02188520
D02455850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01490
B01490
C01490
D01490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021620
B021620
C021620
D021620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10606517051.607505%
B10606419521.840398%
C10607311131.049277%
D10606423572.222243%

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 120935 106145 98 98 0.08% 0.09%
B 120935 106146 187 187 0.15% 0.18%
C 120935 106146 10 10 0.01% 0.01%
D 120935 106143 1119 1119 0.93% 1.05%

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 15 234 1071713 425.96 12394 12117 2487.5
A 0 128 326568 126.41 12394 12117 2487.5
A 13 251 138599 50.85 12394 12117 2487.5
B 10 16 549947 227.76 12523 12233 2360.9
B 11 51 464901 191.73 12523 12233 2360.9
B 10 245 454175 187.19 12523 12233 2360.9
C 1 16 570516 199.82 12176 12233 2793.9
C 13 61 92713 28.81 12176 12233 2793.9
C 8 128 57286 16.13 12176 12233 2793.9
D 1 52 8229684 2821.17 12065 11695 2913.0
D 5 233 1047131 355.46 12065 11695 2913.0
D 2 152 654374 220.63 12065 11695 2913.0

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