ASTROSAT CZTI

Data Quality Report

Orbit 20161018_A02_150T01_9000000738_level2

Creation date: 2017-05-16T16:31:19.412045
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/AS1A02_150T01_9000000738cztM0_level2.evt modeM0/AS1A02_150T01_9000000738cztM0_level2_quad_clean.evt
Size (bytes)3,636,961,920678,369,600
Size3.4 GB 646.9 MB
Events in quadrant A24,873,8864,226,238
Events in quadrant B28,212,5094,301,040
Events in quadrant C24,539,7224,274,354
Events in quadrant D28,903,3274,070,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01098140
B01180070
C01096720
D01215020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010900
B010900
C010900
D010900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535724470.834391%
B535935931.106488%
C535713860.720539%
D5355910832.022069%

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 63937 53670 2 2 0.00% 0.00%
B 63937 53668 31 31 0.05% 0.06%
C 63937 53669 0 0 0.00% 0.00%
D 63937 53666 573 573 0.90% 1.07%

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 14 78926 56.1 6425 6291 1294.7
A 15 174 68147 47.78 6425 6291 1294.7
A 12 194 62298 43.26 6425 6291 1294.7
B 5 172 1827173 1473.64 6508 6366 1235.6
B 15 204 544365 435.42 6508 6366 1235.6
B 11 51 304426 241.23 6508 6366 1235.6
C 13 61 49825 30.17 6269 6308 1442.5
C 14 67 34647 19.64 6269 6308 1442.5
C 8 222 25497 13.3 6269 6308 1442.5
D 4 95 1513093 993.66 6241 6065 1516.6
D 1 20 1386133 909.95 6241 6065 1516.6
D 2 152 1057783 693.45 6241 6065 1516.6

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