ASTROSAT CZTI

Data Quality Report

Orbit 04641

Creation date: 2024-06-27T14:45:15.362628
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/AS1SLEW_01234_9000000581_04641cztM0_level2.evt modeM0/AS1SLEW_01234_9000000581_04641cztM0_level2_quad_clean.evt
Size (bytes)49,896,0004,403,520
Size47.6 MB 4.2 MB
Events in quadrant A344,51818,067
Events in quadrant B351,67118,280
Events in quadrant C343,88318,155
Events in quadrant D415,73217,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015280
B015250
C015230
D017390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76000.000000%
B76000.000000%
C76010.131579%
D76081.052632%

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 760 760 0 0 0.00% 0.00%
B 760 760 0 0 0.00% 0.00%
C 760 760 0 0 0.00% 0.00%
D 760 760 9 9 1.18% 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 8 15 1976 93.63 88 86 20.2
A 12 194 941 42.35 88 86 20.2
A 0 226 851 37.9 88 86 20.2
B 14 167 4257 215.38 88 86 19.4
B 15 204 2716 135.81 88 86 19.4
B 12 111 1376 66.61 88 86 19.4
C 13 61 702 26.84 87 87 22.9
C 1 3 405 13.88 87 87 22.9
C 9 247 304 9.47 87 87 22.9
D 8 112 37360 1629.4 86 84 22.9
D 2 14 16986 738.82 86 84 22.9
D 2 63 16722 727.28 86 84 22.9

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