ASTROSAT CZTI

Data Quality Report

Orbit 19502

Creation date: 2024-06-27T18:03:34.896867
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_175T01_9000002894_19502cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19502cztM0_level2_quad_clean.evt
Size (bytes)544,754,880104,083,200
Size519.5 MB 99.3 MB
Events in quadrant A3,745,208669,564
Events in quadrant B3,805,407671,655
Events in quadrant C4,269,892639,643
Events in quadrant D4,154,822635,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161842
B0163142
C0173363
D0174832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76971562.026764%
B76982022.624058%
C76973304.287385%
D76971852.403534%

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 8312 7699 0 0 0.00% 0.00%
B 8313 7701 7 7 0.08% 0.09%
C 8312 7700 31 31 0.37% 0.40%
D 8312 7699 25 25 0.30% 0.32%

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 11 47 35132 175.05 960 937 195.3
A 3 137 8174 37.05 960 937 195.3
A 0 226 8054 36.43 960 937 195.3
B 3 64 32447 172.03 947 920 183.3
B 0 198 27562 145.37 947 920 183.3
B 12 111 22991 120.43 947 920 183.3
C 3 233 395473 1827.7 914 920 215.9
C 5 112 145200 668.35 914 920 215.9
C 14 238 140924 648.55 914 920 215.9
D 1 52 341903 1494.28 937 908 228.2
D 2 16 193448 843.73 937 908 228.2
D 7 238 35003 149.41 937 908 228.2

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