ASTROSAT CZTI

Data Quality Report

Orbit 55038

Creation date: 2025-12-01T10:45:22.329624
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_025T01_9000006530_55038cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55038cztM0_level2_quad_clean.evt
Size (bytes)715,432,32088,859,520
Size682.3 MB 84.7 MB
Events in quadrant A6,574,263600,787
Events in quadrant B3,192,286725,633
Events in quadrant C3,075,976638,027
Events in quadrant D13,121,073258,881

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02424216
B0143507
C0142306
D04362644

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A669283112.417812%
B6694731.090529%
C6694480.717060%
D6690404660.478326%

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 7841 6697 687 687 8.76% 10.26%
B 7841 6697 12 12 0.15% 0.18%
C 7841 6697 26 26 0.33% 0.39%
D 7840 6693 3367 3367 42.95% 50.31%

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 32 3654340 20931.63 698 681 174.6
A 0 8 138705 790.73 698 681 174.6
A 3 45 25710 143.39 698 681 174.6
B 5 236 122975 784.42 728 701 155.9
B 5 185 85397 543.34 728 701 155.9
B 10 247 72710 461.95 728 701 155.9
C 6 223 83880 423.81 712 708 196.2
C 12 252 63436 319.64 712 708 196.2
C 13 3 51894 260.82 712 708 196.2
D 11 129 5563693 41845.93 460 438 132.9
D 15 94 4702576 35368.74 460 438 132.9
D 10 181 330707 2484.23 460 438 132.9

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