ASTROSAT CZTI

Data Quality Report

Orbit 53188

Creation date: 2025-07-28T23:48:48.075022
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/AS1C09_011T06_9000006490_53188cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53188cztM0_level2_quad_clean.evt
Size (bytes)2,599,482,240206,040,960
Size2.4 GB 196.5 MB
Events in quadrant A11,757,8651,711,184
Events in quadrant B15,374,5371,678,011
Events in quadrant C19,388,5751,409,021
Events in quadrant D48,238,461129,586

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482912
B0592152
C0709282
D015638410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189997033.700195%
B19000236412.442105%
C19000287715.142105%
D189991773193.325965%

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 19919 18999 527 527 2.65% 2.77%
B 19920 19001 1705 1705 8.56% 8.97%
C 19920 19000 2471 2471 12.40% 13.01%
D 19918 18998 17356 17356 87.14% 91.36%

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 7 206 1446594 2986.84 1967 1917 483.7
A 8 249 543793 1120.32 1967 1917 483.7
A 4 249 347994 715.51 1967 1917 483.7
B 2 249 4758510 12053.63 1875 1809 394.6
B 4 81 1630550 4127.28 1875 1809 394.6
B 10 28 440821 1112.47 1875 1809 394.6
C 10 22 3989450 7855.89 1824 1804 507.6
C 15 224 3232894 6365.43 1824 1804 507.6
C 0 240 1413970 2782.05 1824 1804 507.6
D 15 125 43302978 192540.37 778 741 224.9
D 11 245 460006 2042.09 778 741 224.9
D 2 249 223865 992.11 778 741 224.9

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