ASTROSAT CZTI

Data Quality Report

Orbit 17262

Creation date: 2024-06-27T17:34:14.105101
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/AS1T03_059T01_9000002554_17262cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17262cztM0_level2_quad_clean.evt
Size (bytes)1,061,769,600202,775,040
Size1012.6 MB 193.4 MB
Events in quadrant A8,048,0771,279,104
Events in quadrant B7,600,0281,283,679
Events in quadrant C7,579,2751,229,867
Events in quadrant D7,826,2271,226,001

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345553
B0334183
C0333603
D0349213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162753181.953917%
B162762121.302531%
C162762431.492996%
D162762321.425412%

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 18340 16277 94 94 0.51% 0.58%
B 18341 16276 1 1 0.01% 0.01%
C 18341 16278 0 0 0.00% 0.00%
D 18341 16278 48 48 0.26% 0.29%

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 13 210 372424 956.45 1934 1892 387.4
A 0 23 178249 455.23 1934 1892 387.4
A 4 2 61814 154.68 1934 1892 387.4
B 0 230 58340 152.25 1928 1878 370.9
B 12 111 46137 119.34 1928 1878 370.9
B 11 111 40007 102.81 1928 1878 370.9
C 14 238 279631 638.92 1850 1858 434.8
C 3 233 85117 191.51 1850 1858 434.8
C 13 61 12946 25.5 1850 1858 434.8
D 11 176 440035 957.9 1880 1827 457.5
D 10 70 122472 263.72 1880 1827 457.5
D 1 52 84505 180.73 1880 1827 457.5

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