ASTROSAT CZTI

Data Quality Report

Orbit 15319

Creation date: 2024-06-27T17:06:50.816990
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/AS1T02_073T01_9000002260_15319cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15319cztM0_level2_quad_clean.evt
Size (bytes)551,471,040109,327,680
Size525.9 MB 104.3 MB
Events in quadrant A4,395,167681,931
Events in quadrant B3,748,437709,297
Events in quadrant C4,192,374698,395
Events in quadrant D3,826,709669,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185413
B0165052
C0173872
D0170802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79344806.049912%
B79341932.432569%
C7934941.184774%
D79341121.411646%

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 8490 7936 119 119 1.40% 1.50%
B 8490 7936 1 1 0.01% 0.01%
C 8490 7937 0 0 0.00% 0.00%
D 8490 7937 8 8 0.09% 0.10%

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 15 239 787724 4140.81 935 913 190.0
A 9 143 14432 71.15 935 913 190.0
A 0 226 8044 37.53 935 913 190.0
B 3 64 27031 143.04 949 922 182.5
B 12 111 22792 119.81 949 922 182.5
B 11 111 19666 102.69 949 922 182.5
C 3 233 556705 2585.59 930 934 214.9
C 7 221 6922 27.86 930 934 214.9
C 13 61 6706 26.85 930 934 214.9
D 2 33 101910 452.97 924 896 223.0
D 13 122 88270 391.8 924 896 223.0
D 12 110 86017 381.7 924 896 223.0

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