ASTROSAT CZTI

Data Quality Report

Orbit 38478

Creation date: 2024-06-27T21:53:18.256514
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/AS1A12_018T01_9000005386_38478cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38478cztM0_level2_quad_clean.evt
Size (bytes)363,358,08093,032,640
Size346.5 MB 88.7 MB
Events in quadrant A2,830,938643,419
Events in quadrant B3,300,498636,004
Events in quadrant C2,561,889613,487
Events in quadrant D4,351,038558,870

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115063
B0130212
C0106902
D0166232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5217180.345026%
B52171552.971056%
C5217110.210849%
D52172083.986966%

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 7340 5218 11 11 0.15% 0.21%
B 7340 5218 113 113 1.54% 2.17%
C 7340 5218 5 5 0.07% 0.10%
D 7340 5218 162 162 2.21% 3.10%

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 411968 3439.09 597 586 119.6
A 12 189 40330 332.25 597 586 119.6
A 10 248 26337 215.27 597 586 119.6
B 5 184 618147 5617.09 586 570 109.9
B 8 3 158848 1439.6 586 570 109.9
B 0 189 62751 565.56 586 570 109.9
C 15 214 216582 1594.76 585 588 135.4
C 0 10 29388 212.64 585 588 135.4
C 14 254 20265 145.28 585 588 135.4
D 2 16 1240417 8821.99 582 566 140.5
D 13 249 310047 2202.07 582 566 140.5
D 2 250 105199 744.5 582 566 140.5

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