ASTROSAT CZTI

Data Quality Report

Orbit 10752

Creation date: 2024-06-27T16:03:22.728975
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/AS1A03_064T01_9000001548_10752cztM0_level2.evt modeM0/AS1A03_064T01_9000001548_10752cztM0_level2_quad_clean.evt
Size (bytes)623,831,04063,846,720
Size594.9 MB 60.9 MB
Events in quadrant A3,465,291377,095
Events in quadrant B4,109,116381,212
Events in quadrant C3,196,412380,348
Events in quadrant D7,685,279343,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144533
B0165172
C0136552
D0272832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64491011.566134%
B64492023.132269%
C6449490.759808%
D6449136421.150566%

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 7649 6449 26 26 0.34% 0.40%
B 7649 6450 72 72 0.94% 1.12%
C 7649 6450 0 0 0.00% 0.00%
D 7649 6449 1109 1109 14.50% 17.20%

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 15 223 98726 580.5 838 821 168.7
A 15 239 43531 253.24 838 821 168.7
A 15 174 32408 187.29 838 821 168.7
B 4 239 527685 3315.82 835 816 158.9
B 4 81 167038 1046.11 835 816 158.9
B 0 214 47115 291.38 835 816 158.9
C 13 61 6137 28.17 818 825 188.6
C 14 234 4290 18.37 818 825 188.6
C 8 222 2371 8.2 818 825 188.6
D 2 16 4363859 23922.63 760 740 182.4
D 1 52 134046 730.91 760 740 182.4
D 8 195 97625 531.21 760 740 182.4

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