ASTROSAT CZTI

Data Quality Report

Orbit 13551

Creation date: 2024-06-27T16:42:30.127536
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/AS1A04_085T01_9000001996_13551cztM0_level2.evt modeM0/AS1A04_085T01_9000001996_13551cztM0_level2_quad_clean.evt
Size (bytes)523,241,28099,898,560
Size499.0 MB 95.3 MB
Events in quadrant A3,325,633652,065
Events in quadrant B4,263,334628,182
Events in quadrant C3,356,666642,493
Events in quadrant D4,421,494610,765

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146182
B0173131
C0145421
D0177061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7064600.849377%
B70644606.511891%
C7064480.679502%
D70642062.916195%

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 7550 7065 0 0 0.00% 0.00%
B 7550 7065 356 356 4.72% 5.04%
C 7550 7066 0 0 0.00% 0.00%
D 7550 7066 181 181 2.40% 2.56%

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 14 238 43123 245.98 846 826 172.0
A 1 162 17106 94.68 846 826 172.0
A 0 226 7681 39.87 846 826 172.0
B 0 182 780242 5006.78 820 800 155.7
B 3 64 118011 752.91 820 800 155.7
B 4 80 56310 356.57 820 800 155.7
C 3 233 142048 742.41 824 827 190.2
C 13 61 5795 26.12 824 827 190.2
C 14 234 2907 10.93 824 827 190.2
D 13 122 619496 3136.04 821 799 197.3
D 5 222 266678 1347.68 821 799 197.3
D 8 195 244471 1235.12 821 799 197.3

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