ASTROSAT CZTI

Data Quality Report

Orbit 47176

Creation date: 2024-06-27T23:32:30.761157
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/AS1C09_003T01_9000006298_47176cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47176cztM0_level2_quad_clean.evt
Size (bytes)612,152,640123,045,120
Size583.8 MB 117.3 MB
Events in quadrant A7,767,581838,432
Events in quadrant B4,080,068854,223
Events in quadrant C3,564,417800,862
Events in quadrant D6,636,687683,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288130
B0174131
C0164940
D0252190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78901461.850444%
B7890791.001267%
C7890270.342205%
D789083410.570342%

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 7890 7890 16 16 0.20% 0.20%
B 7890 7890 13 13 0.16% 0.16%
C 7890 7890 23 23 0.29% 0.29%
D 7890 7890 788 788 9.99% 9.99%

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 10 83 4217130 23130.14 877 857 182.3
A 0 31 55130 297.74 877 857 182.3
A 15 235 35293 188.91 877 857 182.3
B 4 171 312842 1816.97 872 846 171.7
B 4 21 122950 711.1 872 846 171.7
B 0 190 52130 298.66 872 846 171.7
C 14 254 207953 1044.23 847 852 198.3
C 15 208 28042 137.1 847 852 198.3
C 1 3 13323 62.88 847 852 198.3
D 6 112 1500639 7343.8 821 795 204.2
D 2 249 1077283 5270.89 821 795 204.2
D 7 96 212219 1035.21 821 795 204.2

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