ASTROSAT CZTI

Data Quality Report

Orbit 54586

Creation date: 2025-10-31T10:55:14.147565
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_127T09_9000006520_54586cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54586cztM0_level2_quad_clean.evt
Size (bytes)510,940,80093,911,040
Size487.3 MB 89.6 MB
Events in quadrant A4,707,224633,378
Events in quadrant B3,794,517667,203
Events in quadrant C3,373,643597,957
Events in quadrant D6,542,879499,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183891
B0157921
C0145711
D0238791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63782513.935403%
B63782243.512073%
C63791422.226054%
D637988713.905001%

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 7413 6379 163 163 2.20% 2.56%
B 7413 6379 114 114 1.54% 1.79%
C 7414 6380 102 102 1.38% 1.60%
D 7414 6380 800 800 10.79% 12.54%

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 14 1124620 6343.8 704 687 177.2
A 11 3 525174 2960.36 704 687 177.2
A 4 249 130801 734.4 704 687 177.2
B 8 234 279393 1860.42 695 670 149.8
B 10 14 206236 1372.11 695 670 149.8
B 9 251 164286 1092.1 695 670 149.8
C 4 5 310282 1623.97 688 681 190.6
C 12 249 133147 694.83 688 681 190.6
C 12 250 40139 206.97 688 681 190.6
D 7 70 2879480 15304.46 661 631 188.1
D 6 239 254062 1347.28 661 631 188.1
D 2 172 191275 1013.5 661 631 188.1

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