ASTROSAT CZTI

Data Quality Report

Orbit 58830

Creation date: 2026-08-12T14:21:43.014997
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_106T01_9000006596_58830cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58830cztM0_level2_quad_clean.evt
Size (bytes)685,031,04095,520,960
Size653.3 MB 91.1 MB
Events in quadrant A8,562,868522,069
Events in quadrant B7,874,901579,237
Events in quadrant C4,145,896667,752
Events in quadrant D4,224,365629,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303552
B0281802
C0172532
D0173722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7080206329.138418%
B7081182725.801440%
C70812453.459963%
D70811632.301935%

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 9105 7082 1624 1624 17.84% 22.93%
B 9106 7081 1248 1248 13.71% 17.62%
C 9106 7083 101 101 1.11% 1.43%
D 9106 7083 51 51 0.56% 0.72%

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 15 233 5242668 31224.91 681 663 167.9
A 13 248 566920 3373.01 681 663 167.9
A 3 61 23422 135.57 681 663 167.9
B 2 247 4521108 29935.17 703 677 151.0
B 5 172 211347 1395.1 703 677 151.0
B 4 236 79495 521.95 703 677 151.0
C 13 3 403816 1837.6 794 789 219.3
C 7 64 227307 1032.81 794 789 219.3
C 2 255 119191 539.85 794 789 219.3
D 12 110 750558 3304.46 798 765 226.9
D 11 129 102776 449.58 798 765 226.9
D 5 38 72444 315.9 798 765 226.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct