ASTROSAT CZTI

Data Quality Report

Orbit 28674

Creation date: 2024-06-27T19:54:46.522174
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/AS1A10_110T03_9000004114_28674cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28674cztM0_level2_quad_clean.evt
Size (bytes)540,063,36075,680,640
Size515.0 MB 72.2 MB
Events in quadrant A3,074,338489,812
Events in quadrant B3,612,073493,823
Events in quadrant C3,107,920474,844
Events in quadrant D6,185,599444,703

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123091
B0142261
C0124301
D0223801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5548801.441961%
B55491652.973509%
C55491472.649126%
D554980614.525140%

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 6838 5548 0 0 0.00% 0.00%
B 6839 5549 47 47 0.69% 0.85%
C 6839 5549 0 0 0.00% 0.00%
D 6839 5549 688 688 10.06% 12.40%

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 15 174 22628 138.79 789 777 157.4
A 13 254 9619 56.16 789 777 157.4
A 10 67 8232 47.35 789 777 157.4
B 10 245 563655 3939.77 764 745 142.9
B 4 80 26820 182.5 764 745 142.9
B 0 190 18660 125.39 764 745 142.9
C 14 238 139414 807.17 750 760 171.8
C 14 254 23018 129.57 750 760 171.8
C 8 128 9345 49.98 750 760 171.8
D 1 52 3051047 17702.66 737 720 172.3
D 8 195 321784 1863.3 737 720 172.3
D 2 234 20572 115.21 737 720 172.3

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