ASTROSAT CZTI

Data Quality Report

Orbit 29516

Creation date: 2024-06-27T20:04:54.383836
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/AS1A10_048T05_9000004250_29516cztM0_level2.evt modeM0/AS1A10_048T05_9000004250_29516cztM0_level2_quad_clean.evt
Size (bytes)754,833,60096,652,800
Size719.9 MB 92.2 MB
Events in quadrant A3,345,948641,711
Events in quadrant B3,378,045657,625
Events in quadrant C4,126,340622,553
Events in quadrant D11,575,996555,713

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135432
B0136992
C0162692
D0388042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6439510.792048%
B6439671.040534%
C64393485.404566%
D6439199030.905420%

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 7639 6440 0 0 0.00% 0.00%
B 7639 6440 2 2 0.03% 0.03%
C 7639 6440 42 42 0.55% 0.65%
D 7639 6440 2395 2395 31.35% 37.19%

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 11770 63.19 863 846 172.9
A 3 137 8003 41.4 863 846 172.9
A 15 174 7934 41.0 863 846 172.9
B 12 111 19324 114.2 852 831 161.9
B 11 111 17795 104.76 852 831 161.9
B 0 230 17168 100.89 852 831 161.9
C 7 247 405518 2102.9 825 833 192.4
C 3 233 270323 1400.38 825 833 192.4
C 14 238 167331 865.19 825 833 192.4
D 8 195 7033188 37777.8 794 775 186.2
D 7 80 973232 5223.99 794 775 186.2
D 12 33 404425 2168.39 794 775 186.2

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