ASTROSAT CZTI

Data Quality Report

Orbit 20180430_A04_038T02_9000002068_level2

Creation date: 2018-05-02T16:43:16.020019
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_038T02_9000002068cztM0_level2_bc.evt modeM0/AS1A04_038T02_9000002068cztM0_level2_quad_clean.evt
Size (bytes)2,333,960,6401,027,872,000
Size2.2 GB 980.3 MB
Events in quadrant A11,547,4507,012,797
Events in quadrant B14,154,4487,064,383
Events in quadrant C12,462,2926,832,866
Events in quadrant D28,755,2736,433,209

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011240
B011240
C011240
D011240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01148060
B01238510
C01155650
D01681630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552708081.461914%
B5527013512.444364%
C552707371.333454%
D5527042237.640673%

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 62951 55274 3 3 0.00% 0.01%
B 62951 55273 44 44 0.07% 0.08%
C 62951 55274 14 14 0.02% 0.03%
D 62951 55272 1314 1314 2.09% 2.38%

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 12 189 257403 409.1 2810 2758 622.5
A 8 15 214858 340.75 2810 2758 622.5
A 1 162 82028 127.35 2810 2758 622.5
B 10 16 786808 1458.27 2818 2742 537.7
B 0 189 609524 1128.54 2818 2742 537.7
B 0 219 532070 984.48 2818 2742 537.7
C 3 233 1358996 2274.16 2703 2665 596.4
C 14 220 392146 653.04 2703 2665 596.4
C 0 207 55954 89.35 2703 2665 596.4
D 1 52 8978783 13775.64 2653 2576 651.6
D 13 104 3208066 4919.41 2653 2576 651.6
D 10 157 2034753 3118.75 2653 2576 651.6

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