ASTROSAT CZTI

Data Quality Report

Orbit 54331

Creation date: 2025-10-13T21:09:39.161327
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_54331cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54331cztM0_level2_quad_clean.evt
Size (bytes)715,703,04091,578,240
Size682.5 MB 87.3 MB
Events in quadrant A3,710,037683,660
Events in quadrant B4,493,166690,869
Events in quadrant C6,764,241518,803
Events in quadrant D10,971,345381,957

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162110
B0186150
C0254090
D0374160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7139600.840454%
B71394566.387449%
C7140136319.089636%
D7140284239.803922%

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 7139 7139 26 26 0.36% 0.36%
B 7139 7139 292 292 4.09% 4.09%
C 7139 7139 1235 1235 17.30% 17.30%
D 7140 7140 2782 2782 38.96% 38.96%

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 5 243 472555 2533.7 758 740 186.2
A 15 174 135740 724.97 758 740 186.2
A 4 78 56917 301.68 758 740 186.2
B 5 185 1226975 7891.35 728 701 155.4
B 0 171 62260 396.15 728 701 155.4
B 4 216 52305 332.08 728 701 155.4
C 1 241 3468097 19156.3 664 656 181.0
C 12 2 299834 1652.85 664 656 181.0
C 14 254 141213 776.52 664 656 181.0
D 15 108 7912842 49163.91 569 543 160.9
D 8 176 362188 2247.12 569 543 160.9
D 3 12 117645 727.63 569 543 160.9

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