ASTROSAT CZTI

Data Quality Report

Orbit 20160202_T01_054T01_9000000310_level2

Creation date: 2018-05-17T00:20:46.542300
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/AS1T01_054T01_9000000310cztM0_level2.evt modeM0/AS1T01_054T01_9000000310cztM0_level2_quad_clean.evt
Size (bytes)17,062,303,6801,192,642,560
Size15.9 GB 1.1 GB
Events in quadrant A139,456,1687,285,180
Events in quadrant B131,010,8637,424,130
Events in quadrant C121,432,4097,275,473
Events in quadrant D118,038,1657,051,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020740
B020740
C020740
D020740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04875820
B04624900
C04341330
D04243860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B1180
C1180
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10341811691.130364%
B1034267990.772533%
C1034204600.444788%
D10341410481.013402%

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 120323 103444 7136 7136 5.93% 6.90%
B 120323 103448 4728 4728 3.93% 4.57%
C 120323 103446 3495 3495 2.90% 3.38%
D 120323 103443 4067 4067 3.38% 3.93%

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 0 231 9856397 1237.01 32953 33226 7941.1
A 0 128 3330480 415.21 32953 33226 7941.1
A 14 5 135823 12.92 32953 33226 7941.1
B 5 200 376774 42.41 34292 34487 8070.6
B 0 220 218669 22.82 34292 34487 8070.6
B 5 189 182348 18.32 34292 34487 8070.6
C 9 54 185044 17.71 30977 32067 8637.0
C 1 192 124995 10.76 30977 32067 8637.0
C 10 34 114345 9.53 30977 32067 8637.0
D 13 105 1262032 130.15 30217 31374 9455.9
D 7 34 893801 91.21 30217 31374 9455.9
D 1 83 820748 83.48 30217 31374 9455.9

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