ASTROSAT CZTI

Data Quality Report

Orbit 58730

Creation date: 2026-08-05T20:12:06.527151
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_004T06_9000006594_58730cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58730cztM0_level2_quad_clean.evt
Size (bytes)472,245,12098,308,800
Size450.4 MB 93.8 MB
Events in quadrant A3,262,642660,617
Events in quadrant B4,281,565695,727
Events in quadrant C3,281,016639,286
Events in quadrant D6,156,086532,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140711
B0169311
C0141391
D0225811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64262333.625895%
B64273765.850319%
C64261051.633987%
D642698615.343915%

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 7566 6426 82 82 1.08% 1.28%
B 7567 6427 245 245 3.24% 3.81%
C 7566 6426 35 35 0.46% 0.54%
D 7566 6426 846 846 11.18% 13.17%

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 10 17 268461 1461.9 744 726 183.1
A 15 233 32977 176.1 744 726 183.1
A 10 16 17607 92.17 744 726 183.1
B 8 234 820298 5357.14 717 691 153.0
B 4 201 229263 1494.0 717 691 153.0
B 6 255 92011 596.89 717 691 153.0
C 12 112 252299 1262.52 723 714 199.3
C 6 13 57192 283.42 723 714 199.3
C 14 254 48377 239.18 723 714 199.3
D 11 129 2964052 15461.05 684 655 191.7
D 2 120 139122 722.43 684 655 191.7
D 2 249 111162 576.55 684 655 191.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct