ASTROSAT CZTI

Data Quality Report

Orbit 30559

Creation date: 2024-06-27T20:16:57.592099
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_055T01_9000004400_30559cztM0_level2.evt modeM0/AS1A10_055T01_9000004400_30559cztM0_level2_quad_clean.evt
Size (bytes)543,792,960110,108,160
Size518.6 MB 105.0 MB
Events in quadrant A3,317,181747,353
Events in quadrant B5,405,519735,946
Events in quadrant C3,493,821692,472
Events in quadrant D3,801,165694,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139042
B0206921
C0145001
D0154871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6660590.885886%
B66611882.822399%
C66611662.492118%
D6661741.110944%

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 7640 6661 0 0 0.00% 0.00%
B 7641 6662 29 29 0.38% 0.44%
C 7641 6662 51 51 0.67% 0.77%
D 7641 6662 55 55 0.72% 0.83%

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 12269 67.69 856 842 168.8
A 8 192 11389 62.48 856 842 168.8
A 3 137 8128 43.16 856 842 168.8
B 6 159 1861462 11767.59 837 819 158.1
B 5 255 125420 788.04 837 819 158.1
B 6 36 47903 297.78 837 819 158.1
C 0 10 156241 847.59 790 797 183.4
C 14 238 129930 704.12 790 797 183.4
C 3 233 109927 595.05 790 797 183.4
D 13 249 297328 1535.83 817 797 193.1
D 8 195 155540 801.46 817 797 193.1
D 2 250 132836 683.87 817 797 193.1

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