ASTROSAT CZTI

Data Quality Report

Orbit 54514

Creation date: 2025-10-26T03:54:33.581391
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_127T09_9000006520_54514cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54514cztM0_level2_quad_clean.evt
Size (bytes)497,361,60095,595,840
Size474.3 MB 91.2 MB
Events in quadrant A3,666,833647,181
Events in quadrant B4,891,158638,826
Events in quadrant C5,733,305568,793
Events in quadrant D3,607,033579,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153902
B0192092
C0215842
D0154712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65921502.275485%
B659266010.012136%
C659269310.512743%
D65911221.851009%

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 7667 6593 80 80 1.04% 1.21%
B 7667 6593 393 393 5.13% 5.96%
C 7667 6593 578 578 7.54% 8.77%
D 7666 6592 88 88 1.15% 1.33%

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 11 3 303588 1657.38 736 718 182.7
A 3 14 178843 974.75 736 718 182.7
A 4 3 97245 528.22 736 718 182.7
B 5 185 1096332 7176.58 705 678 152.7
B 10 14 537929 3519.02 705 678 152.7
B 0 213 156445 1020.28 705 678 152.7
C 4 5 2630155 13926.87 688 683 188.8
C 5 10 161174 850.03 688 683 188.8
C 1 16 115518 608.22 688 683 188.8
D 10 181 250995 1231.59 715 684 203.2
D 3 224 178865 876.69 715 684 203.2
D 3 12 78015 380.49 715 684 203.2

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