ASTROSAT CZTI

Data Quality Report

Orbit 09726

Creation date: 2024-06-27T15:49:53.990074
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/AS1A02_029T01_9000001386_09726cztM0_level2.evt modeM0/AS1A02_029T01_9000001386_09726cztM0_level2_quad_clean.evt
Size (bytes)474,750,72067,818,240
Size452.8 MB 64.7 MB
Events in quadrant A3,828,378401,845
Events in quadrant B3,617,145410,843
Events in quadrant C3,111,346408,842
Events in quadrant D3,390,997389,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156783
B0145392
C0130672
D0141452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6338370.583780%
B63381161.830230%
C6338220.347113%
D6338310.489113%

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 7673 6339 0 0 0.00% 0.00%
B 7673 6339 57 57 0.74% 0.90%
C 7673 6339 1 1 0.01% 0.02%
D 7673 6339 17 17 0.22% 0.27%

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 1 162 327160 1995.49 807 792 163.6
A 1 178 147502 897.02 807 792 163.6
A 1 161 137180 833.91 807 792 163.6
B 10 245 275443 1784.68 819 801 153.9
B 4 173 83712 538.77 819 801 153.9
B 0 219 38022 241.87 819 801 153.9
C 13 61 5971 28.32 796 803 182.5
C 14 234 3082 12.49 796 803 182.5
C 8 222 2642 10.08 796 803 182.5
D 12 233 133579 709.5 781 763 187.2
D 2 152 117096 621.45 781 763 187.2
D 1 52 86456 457.77 781 763 187.2

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