ASTROSAT CZTI

Data Quality Report

Orbit 29251

Creation date: 2024-06-27T20:02:13.891844
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_115T01_9000004206_29251cztM0_level2.evt modeM0/AS1A10_115T01_9000004206_29251cztM0_level2_quad_clean.evt
Size (bytes)893,638,08064,149,120
Size852.2 MB 61.2 MB
Events in quadrant A3,239,562444,342
Events in quadrant B3,925,191447,211
Events in quadrant C14,606,049184,918
Events in quadrant D4,864,034420,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134401
B0155831
C0477601
D0186301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354430.676739%
B63531762.770345%
C6353583591.846372%
D63532684.218479%

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 7469 6355 0 0 0.00% 0.00%
B 7468 6354 60 60 0.80% 0.94%
C 7468 6354 4826 4826 64.62% 75.95%
D 7468 6354 188 188 2.52% 2.96%

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 20010 116.15 833 817 165.2
A 13 254 12420 70.22 833 817 165.2
A 3 137 7722 41.79 833 817 165.2
B 10 245 304180 1959.13 824 805 154.9
B 0 229 167567 1076.91 824 805 154.9
B 0 183 163546 1050.94 824 805 154.9
C 3 233 12585228 111059.2 494 500 113.3
C 14 238 78725 690.33 494 500 113.3
C 2 114 9335 77.97 494 500 113.3
D 1 52 1417177 7581.84 793 775 186.8
D 8 195 227391 1213.05 793 775 186.8
D 7 80 97849 519.63 793 775 186.8

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