ASTROSAT CZTI

Data Quality Report

Orbit 20151111_P01_124T01_9000000094_level2

Creation date: 2017-10-31T15:24:05.445657
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_124T01_9000000094cztM0_level2.evt modeM0/AS1P01_124T01_9000000094cztM0_level2_quad_clean.evt
Size (bytes)6,651,155,520479,592,000
Size6.2 GB 457.4 MB
Events in quadrant A49,593,4082,939,736
Events in quadrant B49,900,9332,990,401
Events in quadrant C45,497,7792,927,700
Events in quadrant D53,643,6672,757,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08680
B08680
C08680
D08680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01775190
B01784040
C01653420
D01898040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A423901650.389243%
B423902230.526067%
C423903300.778485%
D4239017654.163718%

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 63951 42400 1169 1169 1.83% 2.76%
B 63951 42400 1038 1038 1.62% 2.45%
C 63951 42400 643 643 1.01% 1.52%
D 63951 42400 3862 3862 6.04% 9.11%

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 12 133 523552 189.6 12271 12135 2697.4
A 15 171 382010 137.12 12271 12135 2697.4
A 12 236 322579 115.09 12271 12135 2697.4
B 5 191 537672 181.71 12353 12415 2890.6
B 7 221 462931 155.85 12353 12415 2890.6
B 4 172 448305 150.79 12353 12415 2890.6
C 9 83 750767 237.08 11203 11594 3117.8
C 9 52 471084 147.38 11203 11594 3117.8
C 3 159 125393 36.5 11203 11594 3117.8
D 1 4 6400739 1907.46 10696 11097 3349.8
D 13 221 1786767 530.08 10696 11097 3349.8
D 13 216 943573 278.37 10696 11097 3349.8

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