ASTROSAT CZTI

Data Quality Report

Orbit 26712

Creation date: 2024-06-27T19:32:01.254705
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_26712cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26712cztM0_level2_quad_clean.evt
Size (bytes)684,815,04094,536,000
Size653.1 MB 90.2 MB
Events in quadrant A4,243,616598,453
Events in quadrant B4,031,146604,031
Events in quadrant C4,188,726580,319
Events in quadrant D7,765,600554,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172660
B0165470
C0170870
D0284220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75442313.062036%
B75441982.624602%
C75453054.042412%
D754493912.446978%

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 8314 7546 64 64 0.77% 0.85%
B 8314 7546 23 23 0.28% 0.30%
C 8315 7547 5 5 0.06% 0.07%
D 8314 7546 513 513 6.17% 6.80%

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 512037 2608.16 963 943 196.0
A 13 254 13319 63.15 963 943 196.0
A 3 137 8989 41.06 963 943 196.0
B 5 172 121784 652.25 960 937 185.3
B 10 246 88546 472.85 960 937 185.3
B 12 111 21821 112.72 960 937 185.3
C 3 233 404490 1862.88 917 923 216.6
C 14 238 145535 667.53 917 923 216.6
C 15 208 27962 124.81 917 923 216.6
D 1 52 3342362 15005.78 906 881 222.7
D 2 250 340353 1524.48 906 881 222.7
D 7 80 273717 1225.24 906 881 222.7

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