ASTROSAT CZTI

Data Quality Report

Orbit 35868

Creation date: 2022-06-08T19:56:38.940118
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_080T01_9000005146_35868cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35868cztM0_level2_quad_clean.evt
Size (bytes)683,910,72074,217,600
Size652.2 MB 70.8 MB
Events in quadrant A7,874,794484,935
Events in quadrant B2,782,133517,820
Events in quadrant C3,995,485476,554
Events in quadrant D5,712,494406,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027218128
B01125532
C01493717
D020500117

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5137132725.832198%
B5149430.835114%
C51573647.058367%
D5139130025.296750%

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 7081 5160 1027 1027 14.50% 19.90%
B 7081 5162 23 23 0.32% 0.45%
C 7081 5165 347 347 4.90% 6.72%
D 7081 5162 1045 1045 14.76% 20.24%

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 15 169 5125514 40899.29 627 619 125.3
A 7 48 152113 1209.0 627 619 125.3
A 10 83 151294 1202.46 627 619 125.3
B 5 172 153600 1249.88 648 635 122.4
B 5 255 28199 225.23 648 635 122.4
B 12 111 14520 113.45 648 635 122.4
C 1 23 1164665 8165.06 611 616 142.6
C 15 214 212560 1486.65 611 616 142.6
C 0 10 210390 1471.43 611 616 142.6
D 2 250 2588756 19238.28 547 534 134.5
D 13 249 394062 2925.1 547 534 134.5
D 7 223 233500 1731.64 547 534 134.5

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