ASTROSAT CZTI

Data Quality Report

Orbit 20171201_C03_024T01_9000001742_level2

Creation date: 2018-01-09T08:40:37.551047
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/AS1C03_024T01_9000001742cztM0_level2_bc.evt modeM0/AS1C03_024T01_9000001742cztM0_level2_quad_clean.evt
Size (bytes)3,675,666,240877,196,160
Size3.4 GB 836.6 MB
Events in quadrant A18,973,5835,498,613
Events in quadrant B45,765,2935,266,993
Events in quadrant C14,462,8065,600,036
Events in quadrant D27,172,6635,214,778

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01706930
B02552250
C01499830
D01967830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014760
B014760
C014740
D014760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7269520552.826879%
B72725851311.705741%
C727175650.776985%
D7272434974.808591%

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 84074 72716 23 23 0.03% 0.03%
B 84074 72756 1261 1261 1.50% 1.73%
C 84074 72746 2 2 0.00% 0.00%
D 84074 72749 451 451 0.54% 0.62%

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 8 15 2634262 3283.94 3682 3609 801.1
A 5 16 895244 1113.06 3682 3609 801.1
A 1 162 581721 721.68 3682 3609 801.1
B 10 16 23318233 33991.09 3627 3525 685.9
B 4 239 4022489 5859.35 3627 3525 685.9
B 3 64 1671942 2432.43 3627 3525 685.9
C 14 234 50594 58.44 3669 3621 803.8
C 1 3 29550 32.26 3669 3621 803.8
C 13 61 22240 23.16 3669 3621 803.8
D 1 52 7683357 9203.74 3603 3474 834.4
D 13 137 1504478 1798.83 3603 3474 834.4
D 8 195 1138576 1360.33 3603 3474 834.4

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