ASTROSAT CZTI

Data Quality Report

Orbit 20161120_G06_168T05_9000000810_level2

Creation date: 2017-09-19T04:24:29.028105
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_168T05_9000000810cztM0_level2.evt modeM0/AS1G06_168T05_9000000810cztM0_level2_quad_clean.evt
Size (bytes)900,912,960155,076,480
Size859.2 MB 147.9 MB
Events in quadrant A6,134,436945,763
Events in quadrant B7,312,122946,406
Events in quadrant C6,032,353950,145
Events in quadrant D6,881,319911,990

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276500
B0308890
C0276680
D0298870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13638660.483942%
B136382772.031090%
C13638600.439947%
D13638940.689251%

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 14688 13640 0 0 0.00% 0.00%
B 14688 13639 127 127 0.86% 0.93%
C 14688 13640 2 2 0.01% 0.01%
D 14688 13640 28 28 0.19% 0.21%

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 15 39711 118.92 1579 1548 320.9
A 0 226 15076 42.16 1579 1548 320.9
A 12 194 14990 41.89 1579 1548 320.9
B 3 64 1018747 3313.41 1583 1542 307.0
B 0 219 86625 277.15 1583 1542 307.0
B 4 172 49209 155.27 1583 1542 307.0
C 1 16 29831 79.87 1532 1539 354.2
C 13 61 11916 29.3 1532 1539 354.2
C 10 22 10987 26.67 1532 1539 354.2
D 2 63 576298 1540.14 1532 1488 373.2
D 5 239 133956 354.93 1532 1488 373.2
D 2 136 104488 275.98 1532 1488 373.2

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