ASTROSAT CZTI

Data Quality Report

Orbit 20191008_A07_006T01_9000003226_level2

Creation date: 2019-10-10T14:46:43.227947
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_006T01_9000003226cztM0_level2_bc.evt modeM0/AS1A07_006T01_9000003226cztM0_level2_quad_clean.evt
Size (bytes)3,403,405,440704,819,520
Size3.2 GB 672.2 MB
Events in quadrant A12,763,1484,587,524
Events in quadrant B13,543,3874,664,713
Events in quadrant C11,369,2134,541,929
Events in quadrant D61,473,7503,595,570

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011720
B011740
C011740
D011740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01214250
B01239730
C01186770
D02891610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A576157051.223640%
B576219861.711182%
C576129791.699299%
D576102230938.724180%

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 66364 57627 2 2 0.00% 0.00%
B 66364 57632 65 65 0.10% 0.11%
C 66364 57627 0 0 0.00% 0.00%
D 66364 57610 9583 9583 14.44% 16.63%

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 14 235 562846 843.36 3038 2982 663.8
A 13 252 346149 516.94 3038 2982 663.8
A 13 254 104943 153.59 3038 2982 663.8
B 3 64 605872 1027.35 3088 3014 586.8
B 0 190 283165 477.41 3088 3014 586.8
B 0 197 170649 285.67 3088 3014 586.8
C 13 61 17285 20.5 2954 2936 699.8
C 0 10 11823 12.7 2954 2936 699.8
C 14 238 9851 9.88 2954 2936 699.8
D 7 238 45605105 75210.54 2600 2507 606.3
D 1 52 3931451 6479.85 2600 2507 606.3
D 13 153 564913 927.55 2600 2507 606.3

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