ASTROSAT CZTI

Data Quality Report

Orbit 46709

Creation date: 2024-06-27T23:26:42.479280
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/AS1A13_037T01_9000006256_46709cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46709cztM0_level2_quad_clean.evt
Size (bytes)528,727,680111,412,800
Size504.2 MB 106.3 MB
Events in quadrant A6,809,027731,129
Events in quadrant B3,705,148773,686
Events in quadrant C3,160,332741,484
Events in quadrant D5,348,083634,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249672
B0160462
C0148492
D0208832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70783314.676462%
B70781592.246397%
C7078520.734671%
D70786338.943204%

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 7748 7080 26 26 0.34% 0.37%
B 7748 7080 13 13 0.17% 0.18%
C 7748 7080 7 7 0.09% 0.10%
D 7748 7080 479 479 6.18% 6.77%

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 10 83 3672421 22647.02 774 757 162.1
A 9 191 91470 559.52 774 757 162.1
A 13 248 20751 123.32 774 757 162.1
B 4 171 342499 2184.91 790 766 156.4
B 0 198 109445 694.85 790 766 156.4
B 0 190 52610 331.47 790 766 156.4
C 3 233 67602 363.97 777 781 183.6
C 14 254 34578 184.09 777 781 183.6
C 12 2 26655 140.93 777 781 183.6
D 1 52 945747 5030.22 740 715 187.9
D 13 168 935994 4978.3 740 715 187.9
D 13 249 332015 1763.44 740 715 187.9

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