ASTROSAT CZTI

Data Quality Report

Orbit 36523

Creation date: 2024-06-27T21:27:55.494923
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_089T02_9000005216_36523cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36523cztM0_level2_quad_clean.evt
Size (bytes)461,566,08089,066,880
Size440.2 MB 84.9 MB
Events in quadrant A2,691,006613,233
Events in quadrant B3,234,663601,818
Events in quadrant C2,938,191584,389
Events in quadrant D4,767,964539,476

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110913
B0129422
C0117632
D0175992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5106100.195848%
B51061021.997650%
C51061262.467685%
D510654510.673717%

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 7229 5107 2 2 0.03% 0.04%
B 7229 5107 67 67 0.93% 1.31%
C 7229 5107 79 79 1.09% 1.55%
D 7229 5107 458 458 6.34% 8.97%

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 202409 1587.92 632 621 127.1
A 9 143 26040 200.03 632 621 127.1
A 14 254 13001 97.42 632 621 127.1
B 5 172 268382 2295.86 611 598 116.6
B 5 255 242479 2073.78 611 598 116.6
B 0 189 144947 1237.59 611 598 116.6
C 0 10 390092 2855.84 592 598 136.4
C 15 214 217476 1590.19 592 598 136.4
C 15 159 16892 119.47 592 598 136.4
D 12 227 895418 6242.69 585 572 143.3
D 13 249 284635 1981.7 585 572 143.3
D 12 16 272901 1899.84 585 572 143.3

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