ASTROSAT CZTI

Data Quality Report

Orbit 03775

Creation date: 2024-06-27T14:33:30.560844
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/AS1G05_248T01_9000000486_03775cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03775cztM0_level2_quad_clean.evt
Size (bytes)488,462,40057,101,760
Size465.8 MB 54.5 MB
Events in quadrant A3,578,548326,459
Events in quadrant B3,349,676329,558
Events in quadrant C3,020,909324,659
Events in quadrant D4,404,294296,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148583
B0141182
C0134632
D0177192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64731652.549050%
B6473520.803337%
C6473651.004171%
D64734316.658427%

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 7628 6473 98 98 1.28% 1.51%
B 7628 6473 1 1 0.01% 0.02%
C 7628 6474 33 33 0.43% 0.51%
D 7628 6473 356 356 4.67% 5.50%

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 13 251 375071 2390.41 765 747 156.6
A 0 118 142430 904.78 765 747 156.6
A 0 50 75013 474.26 765 747 156.6
B 15 204 264346 1754.29 782 763 150.3
B 4 81 40827 266.65 782 763 150.3
B 15 54 15435 97.65 782 763 150.3
C 2 53 111658 641.34 743 746 172.9
C 13 61 6296 32.09 743 746 172.9
C 14 67 3485 15.84 743 746 172.9
D 1 20 1259068 7175.0 724 703 175.4
D 1 84 99136 561.25 724 703 175.4
D 13 249 68046 383.98 724 703 175.4

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
Veto Counter