ASTROSAT CZTI

Data Quality Report

Orbit 54557

Creation date: 2025-10-29T03:10:21.387207
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_54557cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54557cztM0_level2_quad_clean.evt
Size (bytes)606,804,48091,923,840
Size578.7 MB 87.7 MB
Events in quadrant A6,871,422587,123
Events in quadrant B5,585,147594,797
Events in quadrant C5,780,625557,457
Events in quadrant D3,707,620578,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249802
B0212772
C0219982
D0159083

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6662104415.670970%
B6662106415.971180%
C666284312.653858%
D66611241.861582%

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 7656 6662 909 909 11.87% 13.64%
B 7656 6662 716 716 9.35% 10.75%
C 7656 6662 754 754 9.85% 11.32%
D 7655 6661 46 46 0.60% 0.69%

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 3 14 3656552 20601.74 713 692 177.5
A 11 3 305629 1718.4 713 692 177.5
A 4 3 93527 523.15 713 692 177.5
B 8 234 2028734 13951.27 671 647 145.4
B 10 14 255975 1756.41 671 647 145.4
B 2 249 235937 1618.57 671 647 145.4
C 12 254 2438534 12710.73 698 691 191.8
C 1 45 153697 797.76 698 691 191.8
C 6 223 140631 729.63 698 691 191.8
D 1 3 563055 2725.88 728 694 206.3
D 5 173 60737 291.04 728 694 206.3
D 2 172 53311 255.04 728 694 206.3

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