ASTROSAT CZTI

Data Quality Report

Orbit 26623

Creation date: 2024-06-27T19:31:07.395511
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_9000003848_26623cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26623cztM0_level2_quad_clean.evt
Size (bytes)643,317,12087,719,040
Size613.5 MB 83.7 MB
Events in quadrant A3,371,105570,310
Events in quadrant B5,488,793566,019
Events in quadrant C3,506,351551,191
Events in quadrant D6,664,513502,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139500
B0209620
C0142940
D0243900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6691931.389927%
B66924747.083084%
C66921472.196653%
D669282012.253437%

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 7131 6692 4 4 0.06% 0.06%
B 7132 6693 130 130 1.82% 1.94%
C 7132 6693 1 1 0.01% 0.01%
D 7132 6693 729 729 10.22% 10.89%

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 38667 214.6 860 843 176.2
A 5 168 15235 81.66 860 843 176.2
A 13 254 12084 63.78 860 843 176.2
B 0 189 1762901 11093.42 835 814 158.8
B 5 172 390692 2454.52 835 814 158.8
B 12 111 18437 110.95 835 814 158.8
C 3 233 149822 773.92 820 828 192.5
C 14 238 132274 682.77 820 828 192.5
C 15 208 20181 100.52 820 828 192.5
D 7 80 1574198 8145.78 798 780 193.2
D 1 52 1291458 6682.0 798 780 193.2
D 2 250 499660 2582.76 798 780 193.2

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