ASTROSAT CZTI

Data Quality Report

Orbit 47596

Creation date: 2024-07-17T04:49:09.334343
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_037T05_9000006338_47596cztM0_level2.fits modeM0/AS1A13_037T05_9000006338_47596cztM0_level2_quad_clean.evt
Size (bytes)870,960,960116,092,800
Size830.6 MB 110.7 MB
Events in quadrant A9,098,683868,853
Events in quadrant B4,934,270886,917
Events in quadrant C3,786,052872,912
Events in quadrant D13,786,828317,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327620
B0203090
C0173120
D0465830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81824395.365436%
B81833854.704876%
C8183290.354393%
D8183511062.446536%

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 8182 8182 106 106 1.30% 1.30%
B 8183 8183 301 301 3.68% 3.68%
C 8183 8183 12 12 0.15% 0.15%
D 8183 8183 3539 3539 43.25% 43.25%

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 4483755 23247.26 920 898 192.8
A 9 191 649618 3364.14 920 898 192.8
A 15 235 184818 953.77 920 898 192.8
B 5 172 801411 4460.53 911 882 179.5
B 5 29 147590 817.45 911 882 179.5
B 5 32 135854 752.06 911 882 179.5
C 3 233 177443 835.86 901 903 211.2
C 11 16 41585 192.61 901 903 211.2
C 12 250 35684 164.67 901 903 211.2
D 12 2 10191488 77403.02 515 497 131.7
D 2 165 802665 6092.66 515 497 131.7
D 2 249 333483 2529.11 515 497 131.7

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