ASTROSAT CZTI

Data Quality Report

Orbit 26593

Creation date: 2024-06-27T19:30:48.223868
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/AS1A09_095T02_9000003846_26593cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26593cztM0_level2_quad_clean.evt
Size (bytes)793,532,16094,550,400
Size756.8 MB 90.2 MB
Events in quadrant A3,450,267649,825
Events in quadrant B5,266,144614,708
Events in quadrant C4,153,053619,453
Events in quadrant D10,709,597510,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143960
B0200530
C0165250
D0364340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6706771.148225%
B670568610.231171%
C67052203.281133%
D6705244636.480239%

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 7566 6706 14 14 0.19% 0.21%
B 7565 6705 516 516 6.82% 7.70%
C 7565 6705 88 88 1.16% 1.31%
D 7565 6705 2319 2319 30.65% 34.59%

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 0 13 150196 907.8 832 815 164.6
A 12 96 82307 495.23 832 815 164.6
A 13 254 10299 57.63 832 815 164.6
B 3 64 1598904 10802.77 794 778 147.9
B 0 189 531842 3589.81 794 778 147.9
B 12 111 17463 112.78 794 778 147.9
C 15 208 572432 3131.73 789 793 182.5
C 3 233 355285 1942.09 789 793 182.5
C 14 238 130204 708.98 789 793 182.5
D 7 80 5873041 36129.14 674 654 162.5
D 1 52 1317325 8100.66 674 654 162.5
D 2 250 846000 5200.89 674 654 162.5

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