ASTROSAT CZTI

Data Quality Report

Orbit 20191002_A07_039T02_9000003212_level2

Creation date: 2019-10-04T14:54:27.500013
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_039T02_9000003212cztM0_level2_bc.evt modeM0/AS1A07_039T02_9000003212cztM0_level2_quad_clean.evt
Size (bytes)2,476,212,480951,459,840
Size2.3 GB 907.4 MB
Events in quadrant A10,882,7886,407,205
Events in quadrant B12,226,1806,631,432
Events in quadrant C32,438,1096,233,253
Events in quadrant D16,123,1346,196,877

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01059560
B01067420
C01778170
D01204830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09920
B09920
C09920
D09920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4884013742.813268%
B4884111002.252206%
C48841522310.693884%
D4884114883.046621%

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 56921 48841 1 1 0.00% 0.00%
B 56921 48841 102 102 0.18% 0.21%
C 56921 48841 147 147 0.26% 0.30%
D 56921 48841 163 163 0.29% 0.33%

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 89 478298 847.52 2573 2531 561.4
A 15 236 247862 437.02 2573 2531 561.4
A 5 105 107705 187.35 2573 2531 561.4
B 3 64 1055834 2128.46 2648 2588 494.8
B 0 229 344609 691.18 2648 2588 494.8
B 0 230 227652 454.82 2648 2588 494.8
C 8 208 22689160 38010.8 2508 2503 596.8
C 10 22 55930 89.52 2508 2503 596.8
C 10 23 26698 40.54 2508 2503 596.8
D 12 235 1735488 2934.59 2579 2502 590.5
D 1 52 1460744 2469.35 2579 2502 590.5
D 7 238 1096696 1852.88 2579 2502 590.5

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