ASTROSAT CZTI

Data Quality Report

Orbit 20151123_P01_165T02_9000000116_level2

Creation date: 2017-10-26T22:33:06.874925
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/AS1P01_165T02_9000000116cztM0_level2.evt modeM0/AS1P01_165T02_9000000116cztM0_level2_quad_clean.evt
Size (bytes)6,855,664,320504,262,080
Size6.4 GB 480.9 MB
Events in quadrant A61,717,0873,040,659
Events in quadrant B51,735,1553,208,271
Events in quadrant C46,872,9383,170,569
Events in quadrant D44,677,1463,114,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02123410
B01819350
C01675790
D01613890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08080
B08080
C08080
D08080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39886475211.913955%
B398853070.769713%
C398821300.325962%
D398862330.584165%

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 45401 39889 9081 9081 20.00% 22.77%
B 45401 39891 2900 2900 6.39% 7.27%
C 45401 39889 1584 1584 3.49% 3.97%
D 45401 39891 1580 1580 3.48% 3.96%

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 15 127 16052432 5690.27 11748 11848 2819.0
A 15 171 373355 128.24 11748 11848 2819.0
A 14 170 147159 48.0 11748 11848 2819.0
B 8 38 1022498 334.79 12921 12983 3015.4
B 0 220 361490 115.58 12921 12983 3015.4
B 0 207 256339 80.71 12921 12983 3015.4
C 8 208 318102 93.72 11732 12146 3264.6
C 3 111 190467 54.62 11732 12146 3264.6
C 3 79 127569 35.36 11732 12146 3264.6
D 13 200 753168 216.44 11336 11728 3425.6
D 1 4 321476 90.42 11336 11728 3425.6
D 2 16 301741 84.66 11336 11728 3425.6

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