ASTROSAT CZTI

Data Quality Report

Orbit 36461

Creation date: 2022-06-26T15:03:28.396176
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/AS1A11_003T08_9000005202_36461cztM0_level2.evt modeM0/AS1A11_003T08_9000005202_36461cztM0_level2_quad_clean.evt
Size (bytes)442,632,96085,685,760
Size422.1 MB 81.7 MB
Events in quadrant A2,801,745569,731
Events in quadrant B4,050,486551,391
Events in quadrant C3,074,275554,894
Events in quadrant D3,105,176534,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116863
B0155692
C0122962
D0127542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5496110.200146%
B54964307.823872%
C5496941.710335%
D5496611.109898%

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 9021 5498 0 0 0.00% 0.00%
B 9021 5498 294 294 3.26% 5.35%
C 9021 5498 41 41 0.45% 0.75%
D 9021 5498 45 45 0.50% 0.82%

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 193114 1423.0 672 660 135.2
A 13 254 8934 61.18 672 660 135.2
A 13 6 7404 49.86 672 660 135.2
B 5 172 761142 6113.63 644 625 124.4
B 0 182 506299 4065.0 644 625 124.4
B 5 255 117954 943.18 644 625 124.4
C 0 10 289372 1931.31 641 645 149.5
C 15 214 257930 1720.99 641 645 149.5
C 10 49 24468 159.35 641 645 149.5
D 2 250 139321 869.38 649 631 159.5
D 2 153 138335 863.2 649 631 159.5
D 13 249 62554 388.16 649 631 159.5

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