ASTROSAT CZTI

Data Quality Report

Orbit 28361

Creation date: 2024-06-27T19:50:57.034159
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/AS1A10_101T02_9000004084_28361cztM0_level2.evt modeM0/AS1A10_101T02_9000004084_28361cztM0_level2_quad_clean.evt
Size (bytes)651,502,08076,308,480
Size621.3 MB 72.8 MB
Events in quadrant A3,620,757460,232
Events in quadrant B4,785,721461,320
Events in quadrant C3,690,247446,288
Events in quadrant D7,125,951420,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155900
B0189870
C0156450
D0263030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75032062.745568%
B75033634.838065%
C75032232.972144%
D750393412.448354%

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 7503 7503 1 1 0.01% 0.01%
B 7503 7503 38 38 0.51% 0.51%
C 7503 7503 0 0 0.00% 0.00%
D 7503 7503 581 581 7.74% 7.74%

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 13 254 13269 64.91 937 912 190.4
A 3 137 9606 45.67 937 912 190.4
A 0 226 7821 36.29 937 912 190.4
B 10 245 1026938 5720.94 924 898 179.3
B 10 246 102712 567.69 924 898 179.3
B 0 230 25445 136.87 924 898 179.3
C 14 238 141875 661.75 901 908 213.0
C 3 233 29023 131.98 901 908 213.0
C 13 61 6228 24.97 901 908 213.0
D 1 52 2565645 12515.03 848 825 204.9
D 8 195 1094229 5335.26 848 825 204.9
D 13 104 133872 649.2 848 825 204.9

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