ASTROSAT CZTI

Data Quality Report

Orbit 54307

Creation date: 2025-10-12T07:14:15.618647
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/AS1A14_126T15_9000006516_54307cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54307cztM0_level2_quad_clean.evt
Size (bytes)2,049,592,320235,768,320
Size1.9 GB 224.8 MB
Events in quadrant A10,445,6121,780,839
Events in quadrant B12,025,4001,821,120
Events in quadrant C21,374,1391,325,912
Events in quadrant D30,537,588884,085

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453504
B0490984
C0772075
D01042194

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192475392.800436%
B192488394.358894%
C19247446423.193225%
D19247848044.058814%

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 20593 19251 356 356 1.73% 1.85%
B 20594 19252 594 594 2.88% 3.09%
C 20593 19251 3820 3820 18.55% 19.84%
D 20593 19250 6898 6898 33.50% 35.83%

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 8 930840 1864.96 2013 1963 498.1
A 3 130 637308 1275.62 2013 1963 498.1
A 7 29 412369 824.0 2013 1963 498.1
B 10 245 1560108 3678.77 1980 1905 423.6
B 7 0 1413655 3333.01 1980 1905 423.6
B 10 247 212924 498.2 1980 1905 423.6
C 1 241 7315624 15604.7 1711 1698 468.7
C 15 157 6265547 13364.3 1711 1698 468.7
C 14 254 518189 1101.96 1711 1698 468.7
D 8 176 19392052 46415.9 1464 1396 417.8
D 2 172 2634789 6303.62 1464 1396 417.8
D 2 62 1131947 2706.23 1464 1396 417.8

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