ASTROSAT CZTI

Data Quality Report

Orbit 34783

Creation date: 2022-03-05T07:36:54.323666
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C07_004T01_9000004990_34783cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34783cztM0_level2_quad_clean.evt
Size (bytes)454,368,96062,380,800
Size433.3 MB 59.5 MB
Events in quadrant A2,758,007379,780
Events in quadrant B3,595,312387,709
Events in quadrant C3,069,791388,748
Events in quadrant D3,971,407354,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112853
B0139332
C0122182
D0155922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5394230.426400%
B53942133.948832%
C5394170.315165%
D5394851.575825%

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 7397 5395 14 14 0.19% 0.26%
B 7397 5395 156 156 2.11% 2.89%
C 7397 5395 12 12 0.16% 0.22%
D 7397 5395 75 75 1.01% 1.39%

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 10 83 47232 341.37 678 668 136.4
A 7 16 46209 333.87 678 668 136.4
A 8 192 19838 140.54 678 668 136.4
B 5 172 447704 3464.78 678 661 129.0
B 5 255 395738 3062.02 678 661 129.0
B 0 190 41564 317.02 678 661 129.0
C 15 214 232189 1494.0 675 683 155.0
C 0 10 83230 532.71 675 683 155.0
C 14 67 55777 355.54 675 683 155.0
D 8 195 814035 5071.01 659 641 160.4
D 2 250 335754 2089.22 659 641 160.4
D 13 249 81987 507.14 659 641 160.4

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