ASTROSAT CZTI

Data Quality Report

Orbit 46446

Creation date: 2024-06-27T23:23:18.844214
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/AS1A13_062T01_9000006208_46446cztM0_level2.fits modeM0/AS1A13_062T01_9000006208_46446cztM0_level2_quad_clean.evt
Size (bytes)470,131,200114,353,280
Size448.4 MB 109.1 MB
Events in quadrant A6,088,407757,285
Events in quadrant B3,385,746804,038
Events in quadrant C3,216,851764,720
Events in quadrant D4,213,425688,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222712
B0139482
C0136913
D0168872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64213345.201682%
B64211782.772154%
C6420941.464174%
D64202914.532710%

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 7561 6421 23 23 0.30% 0.36%
B 7561 6421 12 12 0.16% 0.19%
C 7560 6421 0 0 0.00% 0.00%
D 7560 6421 159 159 2.10% 2.48%

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 2904975 17878.2 795 782 162.4
A 3 7 47712 288.9 795 782 162.4
A 2 79 40622 245.25 795 782 162.4
B 0 189 142546 913.82 793 770 155.1
B 0 190 53280 338.46 793 770 155.1
B 7 219 23002 143.3 793 770 155.1
C 3 233 132653 716.96 783 788 183.9
C 2 14 18444 96.0 783 788 183.9
C 14 67 6670 31.98 783 788 183.9
D 1 52 1073956 5548.29 771 749 193.4
D 13 249 145708 749.41 771 749 193.4
D 8 176 49498 252.02 771 749 193.4

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