ASTROSAT CZTI

Data Quality Report

Orbit 20190824_A05_104T05_9000003120_level2

Creation date: 2019-08-26T14:44:05.712569
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_104T05_9000003120cztM0_level2_bc.evt modeM0/AS1A05_104T05_9000003120cztM0_level2_quad_clean.evt
Size (bytes)2,333,085,120625,867,200
Size2.2 GB 596.9 MB
Events in quadrant A11,855,9154,076,629
Events in quadrant B15,755,1213,977,631
Events in quadrant C10,145,3583,874,166
Events in quadrant D29,470,5023,570,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010260
B010260
C010260
D010260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01087330
B01277070
C01042510
D01738740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503799041.794398%
B5037930406.034260%
C503798511.689196%
D5037947079.343179%

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 58455 50385 26 26 0.04% 0.05%
B 58455 50381 66 66 0.11% 0.13%
C 58455 50381 0 0 0.00% 0.00%
D 58454 50381 906 906 1.55% 1.80%

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 15 192 1177663 1975.08 2741 2695 594.9
A 6 16 72861 117.95 2741 2695 594.9
A 13 254 60231 96.72 2741 2695 594.9
B 0 182 2861574 5609.25 2725 2661 509.7
B 7 220 986362 1930.04 2725 2661 509.7
B 0 228 345133 671.94 2725 2661 509.7
C 8 128 16535 22.69 2624 2617 613.3
C 9 54 16293 22.3 2624 2617 613.3
C 13 61 15550 21.09 2624 2617 613.3
D 1 239 6451601 10669.88 2571 2481 604.4
D 5 222 5600914 9262.44 2571 2481 604.4
D 1 20 4141631 6848.1 2571 2481 604.4

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