ASTROSAT CZTI

Data Quality Report

Orbit 19560

Creation date: 2024-06-27T18:04:05.464050
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_115T02_9000002906_19560cztM0_level2.evt modeM0/AS1A05_115T02_9000002906_19560cztM0_level2_quad_clean.evt
Size (bytes)524,505,60097,041,600
Size500.2 MB 92.5 MB
Events in quadrant A3,782,236627,688
Events in quadrant B3,492,753633,197
Events in quadrant C3,822,828597,511
Events in quadrant D4,303,284584,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154681
B0150081
C0158271
D0173531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71241552.175744%
B71251722.414035%
C71252243.143860%
D71252283.200000%

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 7309 7126 0 0 0.00% 0.00%
B 7310 7126 7 7 0.10% 0.10%
C 7310 7126 36 36 0.49% 0.51%
D 7310 7126 116 116 1.59% 1.63%

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 15 191 426928 2420.78 869 850 176.0
A 13 254 10340 53.92 869 850 176.0
A 0 226 7402 37.23 869 850 176.0
B 3 64 46443 273.98 859 837 166.5
B 12 111 20387 117.45 859 837 166.5
B 11 111 18332 105.1 859 837 166.5
C 3 233 403379 2057.89 829 837 195.6
C 14 238 127026 645.11 829 837 195.6
C 9 221 25653 126.86 829 837 195.6
D 12 233 399111 1914.87 842 817 208.0
D 7 238 338307 1622.54 842 817 208.0
D 12 218 149906 716.77 842 817 208.0

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