ASTROSAT CZTI

Data Quality Report

Orbit 15806

Creation date: 2024-06-27T17:13:47.438425
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/AS1T02_097T01_9000002340_15806cztM0_level2.evt modeM0/AS1T02_097T01_9000002340_15806cztM0_level2_quad_clean.evt
Size (bytes)445,446,72079,171,200
Size424.8 MB 75.5 MB
Events in quadrant A3,573,908490,140
Events in quadrant B3,288,138507,310
Events in quadrant C3,121,174493,393
Events in quadrant D3,088,999476,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144773
B0134112
C0128222
D0131352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61511332.162250%
B6151651.056739%
C6151440.715331%
D6151260.422695%

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 7497 6153 65 65 0.87% 1.06%
B 7497 6153 22 22 0.29% 0.36%
C 7497 6153 0 0 0.00% 0.00%
D 7497 6153 19 19 0.25% 0.31%

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 15 239 580531 3723.1 774 760 155.7
A 15 174 7382 42.52 774 760 155.7
A 0 226 6845 39.08 774 760 155.7
B 4 173 109487 738.52 788 770 147.2
B 4 48 21067 137.88 788 770 147.2
B 0 229 18031 117.26 788 770 147.2
C 14 238 117643 667.35 759 766 175.1
C 15 127 22222 122.51 759 766 175.1
C 3 233 9492 49.82 759 766 175.1
D 7 223 161938 887.47 755 734 181.6
D 2 120 26045 139.34 755 734 181.6
D 2 234 22791 121.43 755 734 181.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter