ASTROSAT CZTI

Data Quality Report

Orbit 15198

Creation date: 2024-06-27T17:05:09.755675
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/AS1T02_069T01_9000002242_15198cztM0_level2.evt modeM0/AS1T02_069T01_9000002242_15198cztM0_level2_quad_clean.evt
Size (bytes)540,590,40091,725,120
Size515.5 MB 87.5 MB
Events in quadrant A3,160,592610,787
Events in quadrant B6,135,083565,569
Events in quadrant C3,193,550603,144
Events in quadrant D3,462,464565,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132053
B0224612
C0133102
D0145382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6198390.629235%
B619893415.069377%
C6198190.306551%
D6198961.548887%

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 7570 6191 0 0 0.00% 0.00%
B 7570 6191 627 627 8.28% 10.13%
C 7570 6191 0 0 0.00% 0.00%
D 7570 6191 73 73 0.96% 1.18%

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 12 189 78796 487.24 799 786 160.1
A 9 143 7550 42.25 799 786 160.1
A 0 226 7139 39.68 799 786 160.1
B 3 112 2803124 19753.82 759 743 141.9
B 3 64 259370 1823.05 759 743 141.9
B 10 245 39258 271.49 759 743 141.9
C 3 233 136470 759.01 780 788 178.8
C 7 247 5773 27.89 780 788 178.8
C 13 61 5497 26.34 780 788 178.8
D 13 172 328145 1752.3 767 744 186.8
D 7 38 109906 584.25 767 744 186.8
D 13 104 65590 347.06 767 744 186.8

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