ASTROSAT CZTI

Data Quality Report

Orbit 25258

Creation date: 2024-06-27T19:15:36.732640
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_027T01_9000003694_25258cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25258cztM0_level2_quad_clean.evt
Size (bytes)707,644,800116,887,680
Size674.9 MB 111.5 MB
Events in quadrant A3,204,526830,030
Events in quadrant B3,549,198824,507
Events in quadrant C4,304,674771,811
Events in quadrant D9,958,349684,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133750
B0144390
C0169380
D0338930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137580.945087%
B6137851.385042%
C61373966.452664%
D6137178829.134756%

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 7472 6138 0 0 0.00% 0.00%
B 7472 6138 17 17 0.23% 0.28%
C 7472 6138 161 161 2.15% 2.62%
D 7472 6138 1677 1677 22.44% 27.32%

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 3 1 22198 132.11 824 810 161.9
A 13 254 10322 58.75 824 810 161.9
A 0 226 7348 40.38 824 810 161.9
B 3 64 124332 842.46 807 792 146.6
B 15 33 116946 792.1 807 792 146.6
B 0 190 58621 394.36 807 792 146.6
C 0 239 823118 4644.53 777 785 177.1
C 3 233 306897 1728.92 777 785 177.1
C 14 238 125675 705.38 777 785 177.1
D 1 239 3351473 19239.64 732 715 174.2
D 9 35 2048099 11755.83 732 715 174.2
D 8 195 1338653 7682.28 732 715 174.2

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