ASTROSAT CZTI

Data Quality Report

Orbit 54462

Creation date: 2025-10-22T16:54:49.650611
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_126T19_9000006518_54462cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54462cztM0_level2_quad_clean.evt
Size (bytes)782,602,56083,828,160
Size746.3 MB 79.9 MB
Events in quadrant A3,155,548639,024
Events in quadrant B3,436,596686,466
Events in quadrant C7,145,644561,757
Events in quadrant D14,697,334170,977

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146330
B0152940
C0260451
D0484280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6885360.522876%
B6885620.900508%
C688575410.951344%
D6885503773.159041%

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 6885 6885 21 21 0.31% 0.31%
B 6885 6885 15 15 0.22% 0.22%
C 6884 6884 639 639 9.28% 9.28%
D 6885 6885 4472 4472 64.95% 64.95%

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 8 6 146776 815.2 728 711 179.2
A 4 249 90668 502.06 728 711 179.2
A 8 9 50254 276.5 728 711 179.2
B 0 213 253661 1642.7 716 689 154.0
B 5 185 127110 820.93 716 689 154.0
B 7 0 88482 570.09 716 689 154.0
C 7 64 2619011 14114.97 674 668 185.5
C 4 5 1300585 7007.59 674 668 185.5
C 13 3 200506 1077.28 674 668 185.5
D 8 176 8856041 85945.5 357 338 103.0
D 12 1 3253671 31573.93 357 338 103.0
D 15 108 446367 4328.76 357 338 103.0

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