ASTROSAT CZTI

Data Quality Report

Orbit 20191026_A07_167T01_9000003264_level2

Creation date: 2019-10-30T15:10:47.909364
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/AS1A07_167T01_9000003264cztM0_level2_bc.evt modeM0/AS1A07_167T01_9000003264cztM0_level2_quad_clean.evt
Size (bytes)2,100,101,760825,719,040
Size2.0 GB 787.5 MB
Events in quadrant A12,735,0565,402,115
Events in quadrant B12,734,2005,489,456
Events in quadrant C11,471,8905,257,711
Events in quadrant D22,845,0775,021,994

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01191760
B01187060
C01161220
D01556510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011340
B011340
C011340
D011340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559954920.878650%
B559955540.989374%
C559956371.137602%
D5599534056.080900%

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 64229 55989 6 6 0.01% 0.01%
B 64229 55987 10 10 0.02% 0.02%
C 64229 55985 0 0 0.00% 0.00%
D 64230 55989 756 756 1.18% 1.35%

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 944616 1440.22 3047 2997 653.8
A 13 254 84056 123.98 3047 2997 653.8
A 3 1 20641 26.99 3047 2997 653.8
B 3 64 275542 477.4 3072 3011 570.9
B 0 197 182345 314.14 3072 3011 570.9
B 0 230 169942 292.42 3072 3011 570.9
C 10 22 53075 71.27 2958 2954 703.2
C 13 61 16946 19.9 2958 2954 703.2
C 8 128 14517 16.44 2958 2954 703.2
D 1 52 7667812 11115.76 2954 2860 689.6
D 7 238 804794 1162.97 2954 2860 689.6
D 7 38 648911 936.91 2954 2860 689.6

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