ASTROSAT CZTI

Data Quality Report

Orbit 20171005_G08_068T01_9000001580_level2

Creation date: 2017-10-18T19:06:12.003903
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/AS1G08_068T01_9000001580cztM0_level2.evt modeM0/AS1G08_068T01_9000001580cztM0_level2_quad_clean.evt
Size (bytes)1,170,984,960229,207,680
Size1.1 GB 218.6 MB
Events in quadrant A10,252,6761,490,249
Events in quadrant B8,961,7711,547,577
Events in quadrant C6,688,1511,528,395
Events in quadrant D8,629,4411,423,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397750
B0355190
C0290070
D0343720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1379611298.183531%
B137966644.812989%
C138001320.956522%
D137955203.769482%

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 17608 13809 724 724 4.11% 5.24%
B 17608 13811 270 270 1.53% 1.95%
C 17608 13811 1 1 0.01% 0.01%
D 17608 13809 329 329 1.87% 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 8 5 1851223 5378.71 1734 1706 343.9
A 15 223 1030081 2990.69 1734 1706 343.9
A 15 239 466452 1351.56 1734 1706 343.9
B 4 239 1827829 5596.04 1754 1720 326.3
B 15 204 115278 347.99 1754 1720 326.3
B 11 51 60857 181.22 1754 1720 326.3
C 13 61 12826 28.67 1708 1722 387.3
C 12 4 10051 21.5 1708 1722 387.3
C 14 234 8907 18.55 1708 1722 387.3
D 13 152 1016095 2527.92 1692 1651 401.3
D 8 195 414168 1027.96 1692 1651 401.3
D 13 104 178296 440.19 1692 1651 401.3

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