ASTROSAT CZTI

Data Quality Report

Orbit 20161128_G06_028T01_9000000834_level2

Creation date: 2017-09-19T07:16:11.800410
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/AS1G06_028T01_9000000834cztM0_level2.evt modeM0/AS1G06_028T01_9000000834cztM0_level2_quad_clean.evt
Size (bytes)2,812,498,560460,630,080
Size2.6 GB 439.3 MB
Events in quadrant A15,962,6243,039,491
Events in quadrant B19,712,7853,014,774
Events in quadrant C16,112,5462,963,073
Events in quadrant D31,210,1382,709,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0687960
B0797810
C0697100
D01152890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06580
B06580
C06580
D06580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A323895421.673408%
B3238914714.541665%
C323894551.404798%
D3238925107.749545%

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 39084 32396 24 24 0.06% 0.07%
B 39084 32396 743 743 1.90% 2.29%
C 39084 32396 153 153 0.39% 0.47%
D 39084 32396 1965 1965 5.03% 6.07%

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 13 251 318558 393.06 3969 3895 800.6
A 8 15 156645 190.81 3969 3895 800.6
A 14 111 83124 98.97 3969 3895 800.6
B 3 64 3736114 5056.67 3934 3852 738.1
B 4 81 575620 774.66 3934 3852 738.1
B 15 204 149547 197.4 3934 3852 738.1
C 4 254 1136591 1286.97 3820 3854 880.2
C 9 16 70933 76.21 3820 3854 880.2
C 13 61 29905 29.6 3820 3854 880.2
D 12 221 9931940 10755.8 3767 3657 923.1
D 12 220 4554707 4930.38 3767 3657 923.1
D 2 63 753623 812.47 3767 3657 923.1

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