ASTROSAT CZTI

Data Quality Report

Orbit 20191112_A07_049T01_9000003298_level2

Creation date: 2019-11-15T11:34:37.468929
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_049T01_9000003298cztM0_level2_bc.evt modeM0/AS1A07_049T01_9000003298cztM0_level2_quad_clean.evt
Size (bytes)1,580,149,440649,137,600
Size1.5 GB 619.1 MB
Events in quadrant A10,631,5784,150,299
Events in quadrant B11,193,1384,248,110
Events in quadrant C10,234,5283,997,235
Events in quadrant D12,406,6773,859,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010140
B010140
C010140
D010140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030030
B01048640
C01034610
D01089320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496465161.039359%
B496466671.343512%
C496467631.536881%
D496468001.611409%

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 76477 49647 0 0 0.00% 0.00%
B 76477 49644 3 3 0.00% 0.01%
C 76477 49650 0 0 0.00% 0.00%
D 76477 49646 86 86 0.11% 0.17%

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 13 254 59113 96.38 2750 2706 585.2
A 8 6 29073 45.05 2750 2706 585.2
A 0 226 17605 25.46 2750 2706 585.2
B 3 64 209729 399.02 2801 2740 518.7
B 0 190 120388 226.79 2801 2740 518.7
B 0 245 70303 130.24 2801 2740 518.7
C 10 1 34889 52.46 2641 2634 614.9
C 0 10 33259 49.8 2641 2634 614.9
C 13 61 15270 20.55 2641 2634 614.9
D 1 52 838223 1362.41 2669 2579 613.4
D 13 104 481741 781.21 2669 2579 613.4
D 2 136 255386 412.17 2669 2579 613.4

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