ASTROSAT CZTI

Data Quality Report

Orbit 25551

Creation date: 2024-06-27T19:18:56.688091
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/AS1A09_008T05_9000003724_25551cztM0_level2.evt modeM0/AS1A09_008T05_9000003724_25551cztM0_level2_quad_clean.evt
Size (bytes)494,481,60081,348,480
Size471.6 MB 77.6 MB
Events in quadrant A3,581,466509,053
Events in quadrant B3,484,138513,811
Events in quadrant C3,466,831479,737
Events in quadrant D3,966,238471,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147900
B0144630
C0144870
D0160790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7019941.339222%
B70191151.638410%
C70191251.780880%
D70191371.951845%

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 7704 7020 0 0 0.00% 0.00%
B 7704 7020 0 0 0.00% 0.00%
C 7704 7020 0 0 0.00% 0.00%
D 7704 7020 56 56 0.73% 0.80%

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 6 16 115949 633.25 899 882 181.7
A 13 254 9560 47.76 899 882 181.7
A 3 137 8414 41.45 899 882 181.7
B 12 111 21646 121.13 889 868 171.5
B 11 111 19470 108.44 889 868 171.5
B 14 111 17981 99.76 889 868 171.5
C 14 238 137504 680.62 850 857 200.8
C 2 16 14006 65.49 850 857 200.8
C 13 61 5998 25.61 850 857 200.8
D 1 52 505614 2399.74 860 834 210.3
D 8 195 128946 609.05 860 834 210.3
D 13 104 44614 208.13 860 834 210.3

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