ASTROSAT CZTI

Data Quality Report

Orbit 03649

Creation date: 2024-06-27T14:31:57.389783
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/AS1G05_234T02_9000000474_03649cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03649cztM0_level2_quad_clean.evt
Size (bytes)436,962,24073,506,240
Size416.7 MB 70.1 MB
Events in quadrant A2,905,842457,858
Events in quadrant B4,173,549451,881
Events in quadrant C2,772,934453,491
Events in quadrant D2,972,503442,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129172
B0165691
C0125691
D0130781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60211141.893373%
B60211692.806843%
C6021801.328683%
D6021681.129381%

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 6022 31 31 0.44% 0.51%
B 7081 6022 46 46 0.65% 0.76%
C 7081 6022 10 10 0.14% 0.17%
D 7081 6022 6 6 0.08% 0.10%

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 0 50 162307 1148.27 691 674 140.8
A 13 251 34918 243.27 691 674 140.8
A 0 31 21891 150.73 691 674 140.8
B 15 204 881738 6580.17 696 679 133.9
B 14 167 275960 2055.93 696 679 133.9
B 5 172 233914 1741.91 696 679 133.9
C 7 220 60545 378.51 680 682 158.2
C 2 53 42543 264.68 680 682 158.2
C 9 247 9063 52.99 680 682 158.2
D 11 132 205137 1249.56 680 660 163.6
D 13 223 43419 261.3 680 660 163.6
D 8 195 31058 185.76 680 660 163.6

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
Veto Counter