ASTROSAT CZTI

Data Quality Report

Orbit 31615

Creation date: 2024-06-27T20:30:59.479540
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/AS1C06_010T02_9000004618_31615cztM0_level2.evt modeM0/AS1C06_010T02_9000004618_31615cztM0_level2_quad_clean.evt
Size (bytes)54,541,44011,292,480
Size52.0 MB 10.8 MB
Events in quadrant A280,52878,624
Events in quadrant B520,12078,192
Events in quadrant C333,62875,973
Events in quadrant D480,09465,690

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01465335
B02492582
C01826442
D02659887

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114057422404688846
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133
B0133
C0146
D0133

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51600.000000%
B505254.950495%
C515163.106796%
D489397.975460%

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 738 539 0 0 0.00% 0.00%
B 739 529 7 7 0.95% 1.32%
C 739 543 0 0 0.00% 0.00%
D 739 506 36 36 4.87% 7.11%

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 13 6 1267 72.73 72 70 16.5
A 13 254 1106 62.94 72 70 16.5
A 3 137 659 35.79 72 70 16.5
B 6 159 164913 10920.26 71 70 15.1
B 0 190 14500 955.94 71 70 15.1
B 5 172 14374 947.59 71 70 15.1
C 14 238 16912 897.32 71 71 18.8
C 4 175 16151 856.77 71 71 18.8
C 14 254 7230 381.43 71 71 18.8
D 8 195 86461 4955.69 65 63 17.4
D 12 218 80617 4620.48 65 63 17.4
D 12 233 27054 1548.17 65 63 17.4

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