ASTROSAT CZTI

Data Quality Report

Orbit 26544

Creation date: 2024-06-27T19:30:15.218639
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/AS1A09_095T02_9000003840_26544cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26544cztM0_level2_quad_clean.evt
Size (bytes)706,181,760147,810,240
Size673.5 MB 141.0 MB
Events in quadrant A4,116,4541,010,577
Events in quadrant B4,488,5731,018,942
Events in quadrant C4,752,218973,754
Events in quadrant D7,498,375927,196

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171260
B0183900
C0193840
D0276490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7852770.980642%
B78531842.343054%
C78532813.578250%
D785392511.778938%

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 10017 7852 0 0 0.00% 0.00%
B 10018 7853 72 72 0.72% 0.92%
C 10018 7854 74 74 0.74% 0.94%
D 10018 7854 766 766 7.65% 9.75%

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 5 168 119589 593.41 1016 998 199.8
A 0 13 68906 339.8 1016 998 199.8
A 13 254 13338 61.75 1016 998 199.8
B 3 64 510266 2752.89 998 975 185.0
B 0 229 31887 167.09 998 975 185.0
B 12 111 21720 112.13 998 975 185.0
C 4 254 598223 2685.92 967 974 222.4
C 3 233 220331 986.48 967 974 222.4
C 14 238 157516 703.99 967 974 222.4
D 7 80 2571133 11547.17 945 924 222.6
D 1 52 665330 2984.97 945 924 222.6
D 2 250 440205 1973.56 945 924 222.6

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