ASTROSAT CZTI

Data Quality Report

Orbit 51617

Creation date: 2025-04-15T11:53:04.714871
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/AS1A13_037T05_9000006460_51617cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51617cztM0_level2_quad_clean.evt
Size (bytes)635,760,000105,808,320
Size606.3 MB 100.9 MB
Events in quadrant A5,327,338686,294
Events in quadrant B4,943,291770,971
Events in quadrant C4,258,142687,381
Events in quadrant D8,408,794524,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211990
B0199960
C0183420
D0303810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76835116.651048%
B76842473.214472%
C76841642.134305%
D7683160920.942340%

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 7683 7683 402 402 5.23% 5.23%
B 7684 7684 170 170 2.21% 2.21%
C 7684 7684 126 126 1.64% 1.64%
D 7683 7683 1576 1576 20.51% 20.51%

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 12 250 1162737 5822.27 805 787 199.6
A 7 206 453998 2270.94 805 787 199.6
A 5 240 93751 465.82 805 787 199.6
B 1 207 287305 1625.43 814 785 176.3
B 5 172 223760 1264.94 814 785 176.3
B 1 223 221742 1253.49 814 785 176.3
C 13 3 203388 920.36 799 795 220.1
C 15 199 194678 880.79 799 795 220.1
C 0 209 161495 730.04 799 795 220.1
D 7 222 1811018 9255.34 701 677 195.6
D 7 60 1111056 5676.8 701 677 195.6
D 6 42 692421 3536.53 701 677 195.6

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