ASTROSAT CZTI

Data Quality Report

Orbit 09986

Creation date: 2024-06-27T15:53:21.515072
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/AS1G07_074T01_9000001426_09986cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09986cztM0_level2_quad_clean.evt
Size (bytes)477,800,64078,514,560
Size455.7 MB 74.9 MB
Events in quadrant A2,772,904520,757
Events in quadrant B3,963,971493,592
Events in quadrant C2,578,991512,935
Events in quadrant D4,776,357461,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181
B0181
C0181
D0191

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129541012
B0173631845
C012488979
D0197741800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01224
B01224
C01226
D012218

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5608230.410128%
B54812574.688925%
C5598110.196499%
D551173313.300671%

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 7402 5956 0 0 0.00% 0.00%
B 7402 5877 212 212 2.86% 3.61%
C 7402 5937 0 0 0.00% 0.00%
D 7402 5863 692 692 9.35% 11.80%

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 13 251 61719 433.43 689 676 140.8
A 15 174 31015 215.42 689 676 140.8
A 14 111 24407 168.5 689 676 140.8
B 0 85 904951 7081.96 672 658 127.7
B 4 239 200269 1563.25 672 658 127.7
B 11 51 94926 738.26 672 658 127.7
C 13 61 5092 28.92 659 662 153.2
C 14 67 4249 23.41 659 662 153.2
C 8 222 2285 10.59 659 662 153.2
D 1 52 1956283 12391.33 583 569 157.8
D 2 16 204300 1290.83 583 569 157.8
D 2 152 103268 650.7 583 569 157.8

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