ASTROSAT CZTI

Data Quality Report

Orbit 58415

Creation date: 2026-07-15T16:19:14.827926
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_045T01_9000006590_58415cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58415cztM0_level2_quad_clean.evt
Size (bytes)510,851,520113,817,600
Size487.2 MB 108.5 MB
Events in quadrant A4,015,229748,649
Events in quadrant B4,328,655790,573
Events in quadrant C5,787,087696,178
Events in quadrant D4,170,980666,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174744
B0182509
C02259015
D01769221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7835310.395660%
B78332312.949062%
C78313354.277870%
D7828841.073071%

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 7837 7837 6 6 0.08% 0.08%
B 7837 7837 152 152 1.94% 1.94%
C 7838 7838 289 289 3.69% 3.69%
D 7837 7837 67 67 0.85% 0.85%

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 12 114 347441 1595.07 876 854 217.3
A 3 14 86679 394.99 876 854 217.3
A 2 143 62989 285.96 876 854 217.3
B 5 172 227259 1238.94 850 819 182.8
B 2 249 198192 1079.9 850 819 182.8
B 6 255 104287 566.11 850 819 182.8
C 9 38 1070320 4694.31 831 824 227.8
C 5 10 900691 3949.77 831 824 227.8
C 9 237 173085 756.1 831 824 227.8
D 8 240 461609 1948.27 840 800 236.5
D 11 129 141334 594.17 840 800 236.5
D 5 173 61183 255.3 840 800 236.5

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