ASTROSAT CZTI

Data Quality Report

Orbit 16400

Creation date: 2024-06-27T17:22:08.334081
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_069T02_9000002422_16400cztM0_level2.evt modeM0/AS1A05_069T02_9000002422_16400cztM0_level2_quad_clean.evt
Size (bytes)498,867,84067,101,120
Size475.8 MB 64.0 MB
Events in quadrant A3,720,998402,275
Events in quadrant B3,861,221417,348
Events in quadrant C3,484,398396,064
Events in quadrant D3,615,474377,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148003
B0152602
C0140882
D0148822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62782513.998089%
B62781923.058299%
C6278560.892004%
D62781151.831794%

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 7654 6280 177 177 2.31% 2.82%
B 7654 6280 95 95 1.24% 1.51%
C 7654 6280 0 0 0.00% 0.00%
D 7654 6280 77 77 1.01% 1.23%

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 595585 3710.98 804 791 160.3
A 15 223 28279 171.5 804 791 160.3
A 15 239 10372 59.78 804 791 160.3
B 0 229 351619 2287.71 815 797 153.4
B 15 35 78985 509.86 815 797 153.4
B 4 216 51126 328.19 815 797 153.4
C 3 233 331425 1856.28 774 780 178.1
C 14 238 123381 688.3 774 780 178.1
C 13 61 5593 27.02 774 780 178.1
D 12 218 473519 2544.79 772 752 185.8
D 2 16 94063 502.27 772 752 185.8
D 10 70 47452 251.37 772 752 185.8

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