ASTROSAT CZTI

Data Quality Report

Orbit 54762

Creation date: 2025-11-12T15:30:20.185728
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_103T01_9000006524_54762cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54762cztM0_level2_quad_clean.evt
Size (bytes)519,577,92099,524,160
Size495.5 MB 94.9 MB
Events in quadrant A3,148,043675,983
Events in quadrant B6,567,856643,758
Events in quadrant C4,353,761635,170
Events in quadrant D4,635,954586,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142262
B0242082
C0176312
D0184712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67901351.988218%
B6790100914.860088%
C67903054.491900%
D67903875.699558%

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 7880 6791 15 15 0.19% 0.22%
B 7880 6791 756 756 9.59% 11.13%
C 7880 6791 177 177 2.25% 2.61%
D 7880 6791 260 260 3.30% 3.83%

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 5 240 79108 414.84 772 755 188.9
A 4 3 35340 183.11 772 755 188.9
A 8 249 17086 86.47 772 755 188.9
B 2 249 2831548 18589.32 718 693 152.3
B 0 213 338946 2221.2 718 693 152.3
B 1 207 165734 1083.77 718 693 152.3
C 4 5 607102 3033.18 736 731 199.9
C 13 3 524411 2619.55 736 731 199.9
C 6 223 157149 782.43 736 731 199.9
D 3 12 637498 3060.19 732 701 208.1
D 11 129 258547 1239.11 732 701 208.1
D 6 239 255513 1224.52 732 701 208.1

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