ASTROSAT CZTI

Data Quality Report

Orbit 24276

Creation date: 2024-06-27T19:04:14.780497
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/AS1C05_007T01_9000003588_24276cztM0_level2.evt modeM0/AS1C05_007T01_9000003588_24276cztM0_level2_quad_clean.evt
Size (bytes)583,113,60073,981,440
Size556.1 MB 70.6 MB
Events in quadrant A2,987,743480,833
Events in quadrant B3,009,329490,998
Events in quadrant C3,604,086466,209
Events in quadrant D7,659,387389,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121901
B0122861
C0147531
D0270452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5898921.559851%
B5898951.610715%
C58991482.508900%
D5898120020.345880%

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 6978 5898 0 0 0.00% 0.00%
B 6978 5898 1 1 0.01% 0.02%
C 6979 5899 5 5 0.07% 0.08%
D 6978 5898 1141 1141 16.35% 19.35%

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 13 254 8363 48.84 775 759 155.7
A 0 226 6791 38.74 775 759 155.7
A 3 137 6511 36.94 775 759 155.7
B 12 111 17825 116.31 764 745 146.9
B 11 111 15985 103.78 764 745 146.9
B 14 111 14118 91.07 764 745 146.9
C 7 247 484595 2783.43 745 753 173.8
C 14 238 119229 681.56 745 753 173.8
C 2 16 52844 299.67 745 753 173.8
D 1 52 2707465 15945.17 698 679 169.8
D 1 239 1676548 9872.23 698 679 169.8
D 8 195 596021 3507.05 698 679 169.8

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