ASTROSAT CZTI

Data Quality Report

Orbit 42450

Creation date: 2024-06-27T22:40:20.535546
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/AS1C07_001T10_9000005806_42450cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42450cztM0_level2_quad_clean.evt
Size (bytes)450,011,52088,076,160
Size429.2 MB 84.0 MB
Events in quadrant A3,214,323622,914
Events in quadrant B5,542,505476,979
Events in quadrant C2,849,468611,077
Events in quadrant D4,599,488549,670

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131432
B0208352
C0123062
D0177102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5810530.912220%
B5809144124.806335%
C580950.086073%
D58093125.370976%

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 7153 5811 24 24 0.34% 0.41%
B 7152 5810 1115 1115 15.59% 19.19%
C 7152 5810 2 2 0.03% 0.03%
D 7152 5810 291 291 4.07% 5.01%

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 654941 5209.55 607 592 125.6
A 13 248 97371 770.5 607 592 125.6
A 12 189 96780 765.79 607 592 125.6
B 0 186 3224178 31346.63 534 518 102.8
B 5 255 86191 833.08 534 518 102.8
B 3 112 54137 521.39 534 518 102.8
C 15 214 245062 1750.04 596 598 139.7
C 10 34 232968 1663.46 596 598 139.7
C 14 254 29041 203.61 596 598 139.7
D 1 52 1423150 9970.02 586 569 142.7
D 13 171 214877 1501.96 586 569 142.7
D 10 199 184441 1288.65 586 569 142.7

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