ASTROSAT CZTI

Data Quality Report

Orbit 20190429_A05_025T17_9000002868_level2

Creation date: 2019-04-30T12:43:33.517873
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_025T17_9000002868cztM0_level2_bc.evt modeM0/AS1A05_025T17_9000002868cztM0_level2_quad_clean.evt
Size (bytes)892,543,680266,976,000
Size851.2 MB 254.6 MB
Events in quadrant A3,291,2882,028,305
Events in quadrant B3,381,0902,043,955
Events in quadrant C2,959,7111,917,325
Events in quadrant D16,495,0091,185,234

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287670
B0291430
C0282380
D0927970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131373042.314075%
B131373292.504377%
C131373582.725128%
D131371000176.128492%

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 17042 13134 6 6 0.04% 0.05%
B 17042 13134 0 0 0.00% 0.00%
C 17042 13134 0 0 0.00% 0.00%
D 17042 13134 153 153 0.90% 1.16%

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 16 101774 577.01 819 810 175.0
A 15 174 26616 147.48 819 810 175.0
A 13 254 13437 72.16 819 810 175.0
B 0 197 44644 290.01 819 807 151.2
B 7 220 39120 253.46 819 807 151.2
B 4 216 37068 239.89 819 807 151.2
C 3 233 13453 70.99 765 767 178.7
C 5 4 4620 21.56 765 767 178.7
C 13 61 4576 21.31 765 767 178.7
D 10 66 10099837 81714.59 517 503 123.6
D 7 238 3843956 31097.71 517 503 123.6
D 1 52 373992 3021.93 517 503 123.6

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