ASTROSAT CZTI

Data Quality Report

Orbit 20170404_G07_034T01_9000001134_level2

Creation date: 2017-09-23T15:11:30.655887
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/AS1G07_034T01_9000001134cztM0_level2.evt modeM0/AS1G07_034T01_9000001134cztM0_level2_quad_clean.evt
Size (bytes)1,063,405,440179,925,120
Size1014.1 MB 171.6 MB
Events in quadrant A7,424,3781,092,553
Events in quadrant B7,321,9851,111,200
Events in quadrant C6,913,8461,112,558
Events in quadrant D9,501,9001,068,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327720
B0322620
C0315960
D0391640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154221310.849436%
B154221430.927247%
C15422580.376086%
D154225483.553365%

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 16957 15427 13 13 0.08% 0.08%
B 16957 15427 6 6 0.04% 0.04%
C 16957 15427 0 0 0.00% 0.00%
D 16957 15427 506 506 2.98% 3.28%

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 5 112 265895 710.06 1820 1778 372.0
A 5 16 68523 179.44 1820 1778 372.0
A 8 15 57403 149.54 1820 1778 372.0
B 0 214 67913 188.96 1834 1787 350.0
B 0 213 44028 120.7 1834 1787 350.0
B 12 111 37184 101.15 1834 1787 350.0
C 13 61 13595 28.75 1770 1779 410.9
C 14 67 9330 18.38 1770 1779 410.9
C 12 4 4729 7.18 1770 1779 410.9
D 1 7 2191878 4708.32 1745 1703 465.2
D 1 52 217780 464.51 1745 1703 465.2
D 2 152 140183 297.7 1745 1703 465.2

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