ASTROSAT CZTI

Data Quality Report

Orbit 20170807_A03_033T01_9000001438_level2

Creation date: 2017-09-24T14:24:31.179110
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/AS1A03_033T01_9000001438cztM0_level2.evt modeM0/AS1A03_033T01_9000001438cztM0_level2_quad_clean.evt
Size (bytes)1,582,139,520278,527,680
Size1.5 GB 265.6 MB
Events in quadrant A10,914,7001,737,342
Events in quadrant B11,040,2981,761,160
Events in quadrant C10,161,6071,719,183
Events in quadrant D14,248,5301,641,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04700
C04690
D04640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0340
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480390
B0479710
C0465230
D0569770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229442751.198570%
B229573161.376486%
C229781710.744190%
D226585422.392091%

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 28202 24122 25 25 0.09% 0.10%
B 28202 24124 64 64 0.23% 0.27%
C 28202 24147 2 2 0.01% 0.01%
D 28202 23924 314 314 1.11% 1.31%

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 15 239 417477 779.24 2666 2608 532.4
A 8 15 207451 384.75 2666 2608 532.4
A 0 226 24289 40.72 2666 2608 532.4
B 10 247 366208 715.97 2677 2614 507.8
B 0 214 141541 273.57 2677 2614 507.8
B 12 111 56444 106.0 2677 2614 507.8
C 14 67 29732 45.5 2592 2605 596.3
C 14 234 19374 28.12 2592 2605 596.3
C 13 61 19128 27.71 2592 2605 596.3
D 2 16 2235021 3456.68 2536 2479 645.9
D 1 52 1056578 1632.08 2536 2479 645.9
D 8 195 601010 926.72 2536 2479 645.9

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