ASTROSAT CZTI

Data Quality Report

Orbit 27936

Creation date: 2024-06-27T19:46:10.277487
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_049T01_9000004032_27936cztM0_level2.evt modeM0/AS1A10_049T01_9000004032_27936cztM0_level2_quad_clean.evt
Size (bytes)381,479,04064,872,000
Size363.8 MB 61.9 MB
Events in quadrant A2,373,632432,412
Events in quadrant B2,488,888431,633
Events in quadrant C2,533,089405,638
Events in quadrant D3,860,159386,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097750
B0101720
C0103990
D0145500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4374130.297211%
B4374140.320073%
C4374691.577503%
D43743888.870599%

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 4374 4374 0 0 0.00% 0.00%
B 4374 4374 1 1 0.02% 0.02%
C 4374 4374 1 1 0.02% 0.02%
D 4374 4374 361 361 8.25% 8.25%

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 7214 55.39 613 604 119.3
A 0 226 5372 39.96 613 604 119.3
A 3 137 5032 37.11 613 604 119.3
B 10 245 77399 696.75 603 590 110.2
B 0 183 25095 222.29 603 590 110.2
B 4 52 15190 132.44 603 590 110.2
C 3 233 154556 1180.54 575 583 130.4
C 14 238 97147 740.37 575 583 130.4
C 2 16 39718 300.06 575 583 130.4
D 1 52 1222197 9182.94 566 553 133.0
D 8 195 365265 2741.49 566 553 133.0
D 2 250 66722 497.38 566 553 133.0

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