ASTROSAT CZTI

Data Quality Report

Orbit 26241

Creation date: 2024-06-27T19:26:30.217256
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_079T03_9000003790_26241cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26241cztM0_level2_quad_clean.evt
Size (bytes)481,818,240111,726,720
Size459.5 MB 106.6 MB
Events in quadrant A3,331,749732,414
Events in quadrant B3,436,826762,581
Events in quadrant C3,551,802741,577
Events in quadrant D3,841,772705,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140640
B0143540
C0147530
D0158020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6339470.741442%
B63391051.656413%
C63391412.224326%
D63391742.744912%

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 7589 6340 25 25 0.33% 0.39%
B 7589 6340 19 19 0.25% 0.30%
C 7589 6340 17 17 0.22% 0.27%
D 7589 6340 97 97 1.28% 1.53%

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 0 13 146632 887.13 821 805 164.4
A 6 16 15164 87.35 821 805 164.4
A 13 254 9891 55.27 821 805 164.4
B 5 172 112643 725.63 831 816 154.1
B 0 230 37607 238.73 831 816 154.1
B 7 219 21377 133.42 831 816 154.1
C 3 233 233900 1242.71 806 813 187.6
C 14 238 129871 688.08 806 813 187.6
C 2 16 38360 200.18 806 813 187.6
D 1 52 656599 3481.79 796 779 188.4
D 12 233 95982 505.44 796 779 188.4
D 2 234 26864 138.48 796 779 188.4

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