ASTROSAT CZTI

Data Quality Report

Orbit 20161224_G06_164T01_9000000922_level2

Creation date: 2017-09-22T16:01:55.559709
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_164T01_9000000922cztM0_level2.evt modeM0/AS1G06_164T01_9000000922cztM0_level2_quad_clean.evt
Size (bytes)1,117,002,240199,097,280
Size1.0 GB 189.9 MB
Events in quadrant A8,544,5051,271,612
Events in quadrant B7,033,8961,284,198
Events in quadrant C6,628,9321,269,953
Events in quadrant D10,621,1241,183,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355600
B0311450
C0303520
D0422760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147867525.085892%
B147862161.460841%
C147861551.048289%
D14785165311.180250%

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 28402 14790 245 245 0.86% 1.66%
B 28402 14790 12 12 0.04% 0.08%
C 28402 14790 4 4 0.01% 0.03%
D 28402 14789 1255 1255 4.42% 8.49%

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 14 111 1285865 3773.35 1698 1663 340.3
A 4 2 272957 797.14 1698 1663 340.3
A 13 251 231874 676.43 1698 1663 340.3
B 0 214 116572 350.5 1738 1694 327.8
B 4 81 50497 148.9 1738 1694 327.8
B 12 111 32144 92.91 1738 1694 327.8
C 9 247 46609 116.15 1685 1695 386.7
C 13 61 13481 30.48 1685 1695 386.7
C 12 4 8106 16.58 1685 1695 386.7
D 2 33 3836047 9993.3 1587 1536 383.7
D 8 195 275971 715.22 1587 1536 383.7
D 2 63 189251 489.21 1587 1536 383.7

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