ASTROSAT CZTI

Data Quality Report

Orbit 18471

Creation date: 2024-06-27T17:50:09.895366
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/AS1A05_072T02_9000002736_18471cztM0_level2.evt modeM0/AS1A05_072T02_9000002736_18471cztM0_level2_quad_clean.evt
Size (bytes)471,957,12098,968,320
Size450.1 MB 94.4 MB
Events in quadrant A3,464,405629,702
Events in quadrant B3,575,312651,448
Events in quadrant C3,395,149623,812
Events in quadrant D3,387,286609,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148472
B0150602
C0145432
D0147302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6935731.052632%
B69351402.018745%
C69351051.514059%
D6935360.519106%

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 8015 6935 0 0 0.00% 0.00%
B 8015 6935 7 7 0.09% 0.10%
C 8015 6935 0 0 0.00% 0.00%
D 8015 6935 7 7 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 15 174 56113 312.91 870 852 176.6
A 4 2 50656 282.01 870 852 176.6
A 0 13 8586 43.79 870 852 176.6
B 15 222 42244 247.38 874 854 167.3
B 12 18 42133 246.71 874 854 167.3
B 10 245 34711 202.36 874 854 167.3
C 14 238 130305 658.83 836 842 196.5
C 3 233 8577 39.36 836 842 196.5
C 13 61 6001 26.25 836 842 196.5
D 1 52 66948 319.67 845 820 206.9
D 7 96 52069 247.74 845 820 206.9
D 13 249 30106 141.57 845 820 206.9

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