ASTROSAT CZTI

Data Quality Report

Orbit 53924

Creation date: 2025-09-16T11:34:37.223197
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_057T04_9000006508_53924cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53924cztM0_level2_quad_clean.evt
Size (bytes)715,714,560104,656,320
Size682.6 MB 99.8 MB
Events in quadrant A3,987,174732,313
Events in quadrant B4,548,169755,745
Events in quadrant C6,390,076638,736
Events in quadrant D10,959,234496,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174602
B0189562
C0245542
D0380182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78463214.091257%
B78475797.378616%
C7847111814.247483%
D7846234029.824114%

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 8786 7846 25 25 0.28% 0.32%
B 8787 7847 98 98 1.12% 1.25%
C 8787 7847 823 823 9.37% 10.49%
D 8786 7847 2150 2150 24.47% 27.40%

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 205519 925.64 907 884 221.1
A 15 174 52015 231.28 907 884 221.1
A 8 246 41696 184.61 907 884 221.1
B 5 236 649714 3374.16 886 854 192.3
B 0 213 217998 1129.18 886 854 192.3
B 5 185 48726 248.94 886 854 192.3
C 13 3 2092517 9160.89 828 821 228.3
C 1 241 606030 2650.6 828 821 228.3
C 12 252 193160 842.38 828 821 228.3
D 8 176 6149520 29366.17 745 712 209.4
D 2 172 702425 3351.32 745 712 209.4
D 3 12 693803 3310.14 745 712 209.4

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