ASTROSAT CZTI

Data Quality Report

Orbit 20170513_G07_010T03_9000001224_level2

Creation date: 2017-09-23T22:39:17.721322
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_010T03_9000001224cztM0_level2.evt modeM0/AS1G07_010T03_9000001224cztM0_level2_quad_clean.evt
Size (bytes)4,760,530,560714,038,400
Size4.4 GB 681.0 MB
Events in quadrant A31,072,5964,532,960
Events in quadrant B27,279,4354,607,447
Events in quadrant C26,262,4064,540,469
Events in quadrant D55,694,8704,008,471

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01298480
B01191800
C01176980
D02054160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011700
B011780
C011760
D011700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5738512642.202666%
B574146141.069426%
C574133220.560849%
D57170796613.933881%

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 64743 57704 602 602 0.93% 1.04%
B 64743 57711 22 22 0.03% 0.04%
C 64743 57726 15 15 0.02% 0.03%
D 64742 57602 6328 6328 9.77% 10.99%

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 1965557 1425.23 6815 6679 1374.4
A 15 223 1660977 1203.62 6815 6679 1374.4
A 15 239 581976 418.57 6815 6679 1374.4
B 4 173 427404 322.48 6860 6685 1304.6
B 12 111 149551 109.51 6860 6685 1304.6
B 4 80 123418 89.48 6860 6685 1304.6
C 14 234 99552 60.09 6678 6716 1545.0
C 13 61 50954 28.63 6678 6716 1545.0
C 14 67 50083 28.07 6678 6716 1545.0
D 2 16 27615758 17579.88 6281 6126 1570.5
D 2 152 1422914 902.11 6281 6126 1570.5
D 13 122 870921 550.64 6281 6126 1570.5

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