ASTROSAT CZTI

Data Quality Report

Orbit 13368

Creation date: 2024-06-27T16:39:44.115181
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/AS1G08_082T01_9000001986_13368cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13368cztM0_level2_quad_clean.evt
Size (bytes)1,092,216,960176,160,960
Size1.0 GB 168.0 MB
Events in quadrant A7,248,7671,084,534
Events in quadrant B7,467,7561,107,930
Events in quadrant C7,219,4451,081,977
Events in quadrant D10,121,1301,018,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317654
B0320853
C0313703
D0399253

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150882101.391835%
B150882521.670201%
C150881641.086957%
D150886054.009809%

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 16344 15093 30 30 0.18% 0.20%
B 16344 15093 29 29 0.18% 0.19%
C 16344 15093 4 4 0.02% 0.03%
D 16344 15093 377 377 2.31% 2.50%

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 9 143 382707 1062.77 1767 1727 358.5
A 1 162 20917 53.53 1767 1727 358.5
A 4 2 19745 50.26 1767 1727 358.5
B 3 64 405366 1189.67 1773 1727 339.3
B 4 142 40445 114.12 1773 1727 339.3
B 12 111 39912 112.54 1773 1727 339.3
C 14 220 290926 721.08 1737 1744 401.0
C 3 233 146588 361.17 1737 1744 401.0
C 13 61 12754 27.45 1737 1744 401.0
D 1 52 2313922 5663.78 1701 1649 408.3
D 14 34 587829 1435.81 1701 1649 408.3
D 8 195 585579 1430.3 1701 1649 408.3

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