ASTROSAT CZTI

Data Quality Report

Orbit 23249

Creation date: 2024-06-27T18:51:50.195289
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/AS1A08_004T03_9000003438_23249cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23249cztM0_level2_quad_clean.evt
Size (bytes)521,602,56089,478,720
Size497.4 MB 85.3 MB
Events in quadrant A3,199,044575,084
Events in quadrant B3,263,649584,197
Events in quadrant C3,362,080554,755
Events in quadrant D5,516,174527,040

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138242
B0138962
C0139732
D0210922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6716350.521144%
B6715550.819062%
C6715991.474311%
D67164005.955926%

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 8766 6718 0 0 0.00% 0.00%
B 8765 6717 1 1 0.01% 0.01%
C 8765 6717 0 0 0.00% 0.00%
D 8766 6718 335 335 3.82% 4.99%

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 6 16 20430 117.64 823 806 166.8
A 13 254 10278 56.78 823 806 166.8
A 3 137 7121 37.86 823 806 166.8
B 12 111 18899 115.31 824 803 156.9
B 11 111 17009 103.27 824 803 156.9
B 14 111 14187 85.28 824 803 156.9
C 14 238 125322 663.07 796 802 187.8
C 0 239 56711 297.72 796 802 187.8
C 7 247 21959 112.66 796 802 187.8
D 1 52 2093370 10747.17 795 772 194.7
D 12 233 173252 885.82 795 772 194.7
D 2 152 121290 618.96 795 772 194.7

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