ASTROSAT CZTI

Data Quality Report

Orbit 57161

Creation date: 2026-04-22T06:37:08.549600
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_070T08_9000006568_57161cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57161cztM0_level2_quad_clean.evt
Size (bytes)472,118,40092,473,920
Size450.2 MB 88.2 MB
Events in quadrant A2,803,914632,742
Events in quadrant B3,756,664654,509
Events in quadrant C4,002,300575,348
Events in quadrant D6,416,683492,177

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131382
B0156772
C0165442
D0235563

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6387370.579302%
B63873595.620792%
C63873305.166745%
D638694514.797996%

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 7567 6388 14 14 0.19% 0.22%
B 7567 6387 232 232 3.07% 3.63%
C 7567 6388 215 215 2.84% 3.37%
D 7566 6386 843 843 11.14% 13.20%

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 63249 368.01 684 667 170.1
A 13 248 31009 178.42 684 667 170.1
A 15 16 23718 135.55 684 667 170.1
B 10 16 305386 2169.97 664 640 140.4
B 0 152 285495 2028.34 664 640 140.4
B 4 67 165658 1175.03 664 640 140.4
C 15 224 868805 4898.67 645 637 177.2
C 12 252 252332 1420.2 645 637 177.2
C 14 246 158186 888.98 645 637 177.2
D 12 33 3099691 17891.9 612 582 173.2
D 14 49 529971 3056.29 612 582 173.2
D 15 142 84199 482.74 612 582 173.2

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