ASTROSAT CZTI

Data Quality Report

Orbit 46091

Creation date: 2024-06-27T23:19:06.178241
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_077T01_9000006168_46091cztM0_level2.fits modeM0/AS1A13_077T01_9000006168_46091cztM0_level2_quad_clean.evt
Size (bytes)1,022,469,120231,370,560
Size975.1 MB 220.7 MB
Events in quadrant A12,752,2711,506,391
Events in quadrant B7,647,2601,570,306
Events in quadrant C6,981,6751,541,373
Events in quadrant D9,321,7541,365,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0463642
B0326752
C0313772
D0378132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148026234.208891%
B148035323.593866%
C148032491.682091%
D148037525.080051%

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 15572 14806 4 4 0.03% 0.03%
B 15573 14806 40 40 0.26% 0.27%
C 15573 14806 37 37 0.24% 0.25%
D 15573 14806 434 434 2.79% 2.93%

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 5914779 16691.68 1699 1661 354.3
A 9 191 120934 336.69 1699 1661 354.3
A 14 235 89584 248.19 1699 1661 354.3
B 0 190 515465 1527.74 1696 1639 336.3
B 5 172 178409 525.58 1696 1639 336.3
B 3 112 108283 317.08 1696 1639 336.3
C 14 254 369269 924.72 1686 1694 397.5
C 3 233 27663 65.33 1686 1694 397.5
C 12 2 15514 34.77 1686 1694 397.5
D 5 235 869930 2063.23 1664 1612 420.9
D 1 52 626429 1484.64 1664 1612 420.9
D 13 249 589795 1397.59 1664 1612 420.9

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