ASTROSAT CZTI

Data Quality Report

Orbit 48230

Creation date: 2024-08-28T22:54:54.007997
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_029T01_9000006422_48230cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48230cztM0_level2_quad_clean.evt
Size (bytes)516,551,040114,393,600
Size492.6 MB 109.1 MB
Events in quadrant A7,584,893766,251
Events in quadrant B3,689,125793,811
Events in quadrant C3,443,840750,842
Events in quadrant D3,888,183689,170

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271722
B0152262
C0148923
D0162182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66434777.180491%
B66431962.950474%
C66421892.845528%
D66421932.905751%

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 7773 6643 101 101 1.30% 1.52%
B 7773 6643 48 48 0.62% 0.72%
C 7772 6643 107 107 1.38% 1.61%
D 7772 6642 107 107 1.38% 1.61%

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 4439928 26833.62 790 774 165.4
A 13 248 58648 349.83 790 774 165.4
A 13 254 13400 76.32 790 774 165.4
B 5 255 189736 1203.04 796 773 157.1
B 0 200 175206 1110.54 796 773 157.1
B 4 21 114900 726.6 796 773 157.1
C 12 2 386715 2125.13 775 781 181.6
C 12 249 19723 104.3 775 781 181.6
C 0 207 10684 54.53 775 781 181.6
D 2 165 490758 2477.11 783 759 197.8
D 12 233 187682 944.96 783 759 197.8
D 5 32 67170 335.73 783 759 197.8

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