ASTROSAT CZTI

Data Quality Report

Orbit 20161128_G06_151T01_9000000836_level2

Creation date: 2017-09-19T07:31:01.265046
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_151T01_9000000836cztM0_level2.evt modeM0/AS1G06_151T01_9000000836cztM0_level2_quad_clean.evt
Size (bytes)5,062,170,240737,023,680
Size4.7 GB 702.9 MB
Events in quadrant A30,184,6014,679,153
Events in quadrant B35,664,7754,622,980
Events in quadrant C27,828,9994,620,048
Events in quadrant D55,536,3744,228,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01291940
B01461480
C01252660
D02061240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012360
B012360
C012360
D012360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A608256961.144266%
B6082524354.003288%
C608253990.655980%
D60825626310.296753%

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 70870 60837 112 112 0.16% 0.18%
B 70870 60837 1333 1333 1.88% 2.19%
C 70870 60837 27 27 0.04% 0.04%
D 70870 60837 5145 5145 7.26% 8.46%

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 805164 544.44 7242 7088 1465.9
A 13 251 607389 409.52 7242 7088 1465.9
A 15 236 459547 308.66 7242 7088 1465.9
B 3 64 7177686 5262.42 7189 7032 1362.6
B 15 204 201253 142.54 7189 7032 1362.6
B 12 111 137189 95.52 7189 7032 1362.6
C 4 254 278635 168.8 6989 7030 1609.1
C 9 54 81748 46.44 6989 7030 1609.1
C 9 16 74190 41.74 6989 7030 1609.1
D 12 221 9135542 5586.94 6721 6524 1634.0
D 4 95 8511295 5204.9 6721 6524 1634.0
D 12 220 7578155 4633.82 6721 6524 1634.0

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