ASTROSAT CZTI

Data Quality Report

Orbit 56816

Creation date: 2026-03-30T02:30:26.643239
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_083T03_9000006562_56816cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56816cztM0_level2_quad_clean.evt
Size (bytes)560,534,400107,982,720
Size534.6 MB 103.0 MB
Events in quadrant A5,359,358714,554
Events in quadrant B5,554,249745,893
Events in quadrant C5,624,882630,888
Events in quadrant D3,616,454645,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213480
B0218050
C0221710
D0165990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7658901.175242%
B76594295.601253%
C76596708.747878%
D7658590.770436%

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 7658 7658 61 61 0.80% 0.80%
B 7659 7659 273 273 3.56% 3.56%
C 7659 7659 608 608 7.94% 7.94%
D 7658 7658 53 53 0.69% 0.69%

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 1773861 8850.68 811 789 200.3
A 10 251 366782 1826.93 811 789 200.3
A 4 249 30743 149.52 811 789 200.3
B 4 206 977546 5708.64 794 767 171.1
B 5 185 712602 4160.22 794 767 171.1
B 2 249 242510 1412.83 794 767 171.1
C 15 230 1785064 8670.38 752 743 205.8
C 13 3 326960 1585.15 752 743 205.8
C 12 249 244395 1183.95 752 743 205.8
D 2 249 234998 1064.75 782 745 220.0
D 2 31 117879 532.41 782 745 220.0
D 5 173 66042 296.79 782 745 220.0

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