ASTROSAT CZTI

Data Quality Report

Orbit 27098

Creation date: 2024-06-27T19:36:28.769882
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/AS1T03_231T01_9000003910_27098cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27098cztM0_level2_quad_clean.evt
Size (bytes)561,412,80090,789,120
Size535.4 MB 86.6 MB
Events in quadrant A3,480,499602,173
Events in quadrant B3,515,433620,378
Events in quadrant C3,228,902577,897
Events in quadrant D6,357,310515,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140720
B0143250
C0132470
D0230700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61991061.709953%
B6199570.919503%
C6199761.226004%
D619882413.294611%

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 7464 6200 76 76 1.02% 1.23%
B 7464 6200 4 4 0.05% 0.06%
C 7464 6200 5 5 0.07% 0.08%
D 7463 6199 729 729 9.77% 11.76%

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 14 235 337320 2093.81 806 793 160.7
A 12 189 20040 119.75 806 793 160.7
A 6 16 11203 64.77 806 793 160.7
B 10 245 153592 1008.26 816 800 151.5
B 3 112 92671 606.25 816 800 151.5
B 0 189 44325 287.22 816 800 151.5
C 14 238 124388 676.83 776 781 182.6
C 15 208 45267 243.59 776 781 182.6
C 3 233 26426 140.42 776 781 182.6
D 1 52 3062812 17234.26 737 719 177.7
D 2 250 189356 1061.7 737 719 177.7
D 12 227 130259 729.09 737 719 177.7

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