ASTROSAT CZTI

Data Quality Report

Orbit 48528

Creation date: 2024-09-18T01:32:27.886301
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/AS1A13_037T01_9000006436_48528cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48528cztM0_level2_quad_clean.evt
Size (bytes)1,362,265,920283,409,280
Size1.3 GB 270.3 MB
Events in quadrant A19,019,8191,904,505
Events in quadrant B11,339,0281,822,534
Events in quadrant C7,732,5571,898,876
Events in quadrant D10,904,1261,678,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070537590
B047189262
C038139244
D047171599

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03782
B03771
C03782
D03782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185097263.922416%
B1853312306.636810%
C185351330.717561%
D185018744.724069%

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 19869 18550 86 86 0.43% 0.46%
B 19901 18559 644 644 3.24% 3.47%
C 19929 18555 1 1 0.01% 0.01%
D 19896 18544 572 572 2.87% 3.08%

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 10 83 10663521 25790.82 1977 1938 413.4
A 12 189 586376 1413.78 1977 1938 413.4
A 7 3 84663 200.12 1977 1938 413.4
B 12 16 2892198 7638.21 1933 1871 378.4
B 5 255 333049 875.2 1933 1871 378.4
B 5 171 128733 335.26 1933 1871 378.4
C 14 254 29945 60.52 1964 1975 462.2
C 3 233 23183 45.89 1964 1975 462.2
C 14 67 20542 40.17 1964 1975 462.2
D 2 165 2407972 4966.44 1938 1878 484.5
D 2 249 599326 1233.2 1938 1878 484.5
D 12 233 321728 660.2 1938 1878 484.5

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