ASTROSAT CZTI

Data Quality Report

Orbit 51276

Creation date: 2025-03-22T16:00:32.690443
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/AS1C07_001T01_9000006454_51276cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51276cztM0_level2_quad_clean.evt
Size (bytes)653,019,84090,685,440
Size622.8 MB 86.5 MB
Events in quadrant A5,816,398623,842
Events in quadrant B3,952,942691,534
Events in quadrant C9,573,789412,826
Events in quadrant D4,330,648567,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219152
B0161672
C0328152
D0175583

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64422453.803167%
B64431852.871333%
C6443243937.855036%
D64422794.330953%

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 7597 6442 126 126 1.66% 1.96%
B 7598 6443 98 98 1.29% 1.52%
C 7598 6443 2372 2372 31.22% 36.82%
D 7597 6442 223 223 2.94% 3.46%

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 3 1716470 10141.34 681 664 169.2
A 8 10 491001 2898.16 681 664 169.2
A 9 160 226209 1333.09 681 664 169.2
B 5 185 602171 4143.78 687 663 145.2
B 10 247 168254 1154.53 687 663 145.2
B 10 254 89579 612.54 687 663 145.2
C 4 12 6293638 41975.85 541 536 149.9
C 10 171 623014 4152.01 541 536 149.9
C 12 16 114156 757.86 541 536 149.9
D 8 176 874806 4731.57 663 639 184.8
D 2 216 341251 1843.62 663 639 184.8
D 3 12 91069 489.47 663 639 184.8

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