ASTROSAT CZTI

Data Quality Report

Orbit 20171204_A04_022T07_9000001748_level2

Creation date: 2018-01-09T09:36:57.406590
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/AS1A04_022T07_9000001748cztM0_level2_bc.evt modeM0/AS1A04_022T07_9000001748cztM0_level2_quad_clean.evt
Size (bytes)4,337,861,760919,434,240
Size4.0 GB 876.8 MB
Events in quadrant A15,816,8096,089,180
Events in quadrant B70,708,5384,574,268
Events in quadrant C15,060,1686,124,849
Events in quadrant D24,587,4285,816,423

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01630620
B03672290
C01566590
D01887080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015580
B015580
C015580
D015580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7634013341.747446%
B763322907338.087565%
C763406680.875033%
D7633221502.816643%

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 87671 76350 0 0 0.00% 0.00%
B 87671 76347 9652 9652 11.01% 12.64%
C 87671 76348 0 0 0.00% 0.00%
D 87671 76345 248 248 0.28% 0.32%

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 1 162 588354 699.38 3834 3760 835.9
A 13 251 153366 178.98 3834 3760 835.9
A 13 254 87697 100.42 3834 3760 835.9
B 10 16 49428258 85860.11 3014 2936 575.6
B 4 239 4128983 7167.64 3014 2936 575.6
B 3 64 2610629 4530.0 3014 2936 575.6
C 7 238 44810 47.3 3816 3751 868.1
C 13 61 22887 22.04 3816 3751 868.1
C 8 222 21547 20.5 3816 3751 868.1
D 1 52 2895822 3106.19 3798 3642 931.1
D 12 233 1470888 1575.82 3798 3642 931.1
D 13 122 875280 936.14 3798 3642 931.1

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