ASTROSAT CZTI

Data Quality Report

Orbit 57509

Creation date: 2026-05-15T16:22:46.547368
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_113T09_9000006574_57509cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57509cztM0_level2_quad_clean.evt
Size (bytes)441,774,720102,729,600
Size421.3 MB 98.0 MB
Events in quadrant A3,594,815672,953
Events in quadrant B3,746,830724,309
Events in quadrant C4,392,151639,142
Events in quadrant D4,099,171608,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152341
B0153621
C0177321
D0165551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66891742.601286%
B66901251.868460%
C66902714.050822%
D66901992.974589%

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 7799 6690 92 92 1.18% 1.38%
B 7800 6691 23 23 0.29% 0.34%
C 7800 6691 145 145 1.86% 2.17%
D 7800 6691 122 122 1.56% 1.82%

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 12 398580 2159.66 755 734 184.2
A 13 248 118561 639.61 755 734 184.2
A 7 64 59368 318.29 755 734 184.2
B 4 206 507749 3219.14 739 713 157.5
B 5 185 78517 493.97 739 713 157.5
B 10 247 52106 326.29 739 713 157.5
C 15 224 1337305 6766.46 726 719 197.5
C 14 254 66982 335.46 726 719 197.5
C 12 252 57154 285.7 726 719 197.5
D 2 31 683813 3289.85 737 703 207.6
D 2 120 144702 693.5 737 703 207.6
D 8 240 92027 439.82 737 703 207.6

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