ASTROSAT CZTI

Data Quality Report

Orbit 20160914_T01_136T01_9000000662_level2

Creation date: 2016-10-21T00:05:47.657264
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/AS1T01_136T01_9000000662cztM0_level2_bc.evt modeM0/AS1T01_136T01_9000000662cztM0_level2_quad_clean.evt
Size (bytes)991,298,880334,319,040
Size945.4 MB 318.8 MB
Events in quadrant A6,112,0472,004,198
Events in quadrant B6,544,6142,033,955
Events in quadrant C6,963,7822,022,717
Events in quadrant D8,214,9521,868,143

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06460
B06500
C06520
D06480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0658710
B0665670
C0671130
D0818860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A319545841.827627%
B319585861.833657%
C319664641.451542%
D3194127778.694155%

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 37884 32059 9 9 0.02% 0.03%
B 37884 32053 0 0 0.00% 0.00%
C 37884 32056 0 0 0.00% 0.00%
D 37884 32053 96 96 0.25% 0.30%

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 0 50 88626 252.05 1559 1520 345.6
A 13 251 15887 41.57 1559 1520 345.6
A 12 194 13196 33.78 1559 1520 345.6
B 4 48 136748 447.75 1586 1541 302.0
B 15 204 135074 442.21 1586 1541 302.0
B 0 229 57620 185.71 1586 1541 302.0
C 1 16 783750 2254.0 1567 1540 347.0
C 12 4 19638 52.15 1567 1540 347.0
C 8 128 14785 38.17 1567 1540 347.0
D 1 239 990681 2809.36 1509 1449 352.1
D 2 33 490367 1388.5 1509 1449 352.1
D 13 53 255680 722.0 1509 1449 352.1

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