ASTROSAT CZTI

Data Quality Report

Orbit 56846

Creation date: 2026-04-01T02:52:59.842933
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_083T03_9000006562_56846cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56846cztM0_level2_quad_clean.evt
Size (bytes)494,326,080114,670,080
Size471.4 MB 109.4 MB
Events in quadrant A4,068,185743,082
Events in quadrant B4,985,825792,021
Events in quadrant C3,550,126721,156
Events in quadrant D5,071,191658,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182260
B0204830
C0166370
D0207700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80131902.371147%
B80133193.981031%
C8014120.149738%
D80143334.155228%

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 8013 8013 129 129 1.61% 1.61%
B 8013 8013 220 220 2.75% 2.75%
C 8014 8014 16 16 0.20% 0.20%
D 8014 8014 255 255 3.18% 3.18%

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 3 62 330027 1552.78 855 834 212.0
A 10 251 271640 1277.37 855 834 212.0
A 4 13 64670 301.11 855 834 212.0
B 5 185 1351392 7452.17 843 812 181.2
B 0 245 77663 424.04 843 812 181.2
B 10 247 57156 310.89 843 812 181.2
C 12 252 143825 628.04 831 819 227.7
C 14 254 32082 137.3 831 819 227.7
C 11 244 23123 97.95 831 819 227.7
D 8 240 779553 3408.11 814 779 228.5
D 2 249 590296 2579.88 814 779 228.5
D 2 120 128468 558.8 814 779 228.5

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