ASTROSAT CZTI

Data Quality Report

Orbit 26831

Creation date: 2024-06-27T19:33:27.519066
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_145T01_9000003866_26831cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26831cztM0_level2_quad_clean.evt
Size (bytes)613,388,160100,949,760
Size585.0 MB 96.3 MB
Events in quadrant A3,659,890662,790
Events in quadrant B3,803,152670,352
Events in quadrant C3,558,123647,040
Events in quadrant D7,081,724589,766

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153900
B0156560
C0147870
D0258270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6990610.872675%
B69911171.673580%
C69911091.559147%
D6991110015.734516%

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 8805 6991 0 0 0.00% 0.00%
B 8806 6992 34 34 0.39% 0.49%
C 8806 6992 0 0 0.00% 0.00%
D 8805 6992 858 858 9.74% 12.27%

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 0 13 191746 1044.89 898 880 182.7
A 13 254 12027 61.02 898 880 182.7
A 3 137 8458 41.49 898 880 182.7
B 3 64 158507 920.13 896 875 171.3
B 7 205 59728 343.54 896 875 171.3
B 0 189 25664 144.7 896 875 171.3
C 14 238 139874 680.26 867 876 204.3
C 8 128 11621 52.59 867 876 204.3
C 15 208 8816 38.86 867 876 204.3
D 1 52 2088323 10462.69 830 811 199.5
D 15 36 877052 4391.75 830 811 199.5
D 7 80 672914 3368.61 830 811 199.5

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