ASTROSAT CZTI

Data Quality Report

Orbit 20487

Creation date: 2024-06-27T18:15:58.145049
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_208T03_9000003026_20487cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20487cztM0_level2_quad_clean.evt
Size (bytes)773,709,12087,730,560
Size737.9 MB 83.7 MB
Events in quadrant A3,763,954549,808
Events in quadrant B4,200,481553,624
Events in quadrant C3,725,499533,415
Events in quadrant D11,218,226479,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163914
B0173573
C0161433
D0387453

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77562633.390923%
B77563144.048479%
C77562643.403816%
D7756111114.324394%

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 8166 7756 15 15 0.18% 0.19%
B 8166 7756 27 27 0.33% 0.35%
C 8166 7756 0 0 0.00% 0.00%
D 8166 7756 837 837 10.25% 10.79%

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 5 16 125074 656.03 930 907 189.3
A 12 16 30533 156.53 930 907 189.3
A 9 143 17996 90.29 930 907 189.3
B 7 220 238895 1333.38 932 906 178.5
B 0 189 68924 381.08 932 906 178.5
B 0 219 58656 323.55 932 906 178.5
C 14 238 138516 653.86 895 899 210.5
C 9 221 54491 254.63 895 899 210.5
C 3 233 34858 161.35 895 899 210.5
D 1 52 6915511 32417.78 875 846 213.3
D 2 165 324344 1516.64 875 846 213.3
D 7 238 252206 1178.44 875 846 213.3

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