ASTROSAT CZTI

Data Quality Report

Orbit 18570

Creation date: 2024-06-27T17:51:48.982300
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/AS1A05_167T01_9000002758_18570cztM0_level2.evt modeM0/AS1A05_167T01_9000002758_18570cztM0_level2_quad_clean.evt
Size (bytes)540,385,92089,003,520
Size515.4 MB 84.9 MB
Events in quadrant A3,486,734565,166
Events in quadrant B3,531,123582,170
Events in quadrant C3,738,305565,291
Events in quadrant D5,184,677545,373

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144222
B0145123
C0152482
D0195762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62551171.870504%
B62551292.062350%
C62551983.165468%
D625566310.599520%

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 8930 6256 3 3 0.03% 0.05%
B 8930 6256 3 3 0.03% 0.05%
C 8930 6256 19 19 0.21% 0.30%
D 8930 6256 445 445 4.98% 7.11%

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 5 98 36381 200.52 887 870 177.1
A 14 111 23888 129.98 887 870 177.1
A 13 254 11556 60.34 887 870 177.1
B 0 190 21174 121.15 892 872 167.6
B 4 216 20216 115.43 892 872 167.6
B 12 111 18897 107.56 892 872 167.6
C 4 254 171620 852.28 871 884 200.3
C 14 238 136866 678.79 871 884 200.3
C 9 54 35228 171.44 871 884 200.3
D 7 238 1567042 7687.13 850 830 203.7
D 1 52 351422 1720.74 850 830 203.7
D 14 34 41012 197.22 850 830 203.7

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