ASTROSAT CZTI

Data Quality Report

Orbit 20190123_A05_019T01_9000002672_level2

Creation date: 2019-01-26T17:04:47.563516
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/AS1A05_019T01_9000002672cztM0_level2_bc.evt modeM0/AS1A05_019T01_9000002672cztM0_level2_quad_clean.evt
Size (bytes)3,279,487,6801,264,800,960
Size3.1 GB 1.2 GB
Events in quadrant A22,491,1468,189,148
Events in quadrant B21,188,8488,229,016
Events in quadrant C20,014,7407,842,761
Events in quadrant D29,320,3377,707,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02038550
B01999890
C01945810
D02276200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018860
B018860
C018860
D018860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9251817551.896928%
B9251813521.461337%
C9251712971.401905%
D9251833803.653343%

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 109423 92519 169 169 0.15% 0.18%
B 109423 92520 25 25 0.02% 0.03%
C 109423 92517 9 9 0.01% 0.01%
D 109423 92518 543 543 0.50% 0.59%

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 15 174 2476153 2326.15 4898 4807 1062.4
A 14 237 1171070 1097.74 4898 4807 1062.4
A 4 2 32655 26.21 4898 4807 1062.4
B 7 220 859441 920.7 4925 4787 928.3
B 0 197 344056 365.49 4925 4787 928.3
B 5 172 117968 121.93 4925 4787 928.3
C 3 233 1643875 1498.11 4694 4679 1094.2
C 0 207 91306 79.17 4694 4679 1094.2
C 9 160 87785 75.95 4694 4679 1094.2
D 7 238 3405389 2802.36 4771 4623 1213.5
D 5 222 3358795 2763.97 4771 4623 1213.5
D 11 176 1007289 826.24 4771 4623 1213.5

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