ASTROSAT CZTI

Data Quality Report

Orbit 16602

Creation date: 2024-06-27T17:24:57.105393
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/AS1C04_009T01_9000002448_16602cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16602cztM0_level2_quad_clean.evt
Size (bytes)455,437,440132,359,040
Size434.3 MB 126.2 MB
Events in quadrant A3,251,376884,855
Events in quadrant B3,445,415922,597
Events in quadrant C3,313,425906,218
Events in quadrant D3,365,483866,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137203
B0144012
C0137742
D0143262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6148610.992193%
B6148771.252440%
C6148921.496422%
D6148891.447625%

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 7499 6150 22 22 0.29% 0.36%
B 7499 6150 5 5 0.07% 0.08%
C 7499 6150 0 0 0.00% 0.00%
D 7499 6150 41 41 0.55% 0.67%

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 15 174 252191 1661.44 769 755 151.3
A 9 143 18100 114.61 769 755 151.3
A 3 1 8693 52.45 769 755 151.3
B 15 35 162059 1133.31 783 764 142.3
B 4 216 33194 227.86 783 764 142.3
B 0 189 32196 220.85 783 764 142.3
C 3 233 183109 1030.18 767 773 177.0
C 14 238 120200 674.75 767 773 177.0
C 7 247 16403 88.31 767 773 177.0
D 10 70 144830 792.11 763 743 181.9
D 2 16 128369 701.62 763 743 181.9
D 1 52 122679 670.34 763 743 181.9

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