ASTROSAT CZTI

Data Quality Report

Orbit 03797

Creation date: 2024-06-27T14:33:48.077650
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_152T03_9000000488_03797cztM0_level2.evt modeM0/AS1G05_152T03_9000000488_03797cztM0_level2_quad_clean.evt
Size (bytes)649,923,84085,314,240
Size619.8 MB 81.4 MB
Events in quadrant A4,842,005532,207
Events in quadrant B4,598,939535,634
Events in quadrant C3,401,136534,444
Events in quadrant D6,347,104472,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193892
B0187531
C0154651
D0239501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72932303.153709%
B72932203.016591%
C7293861.179213%
D729392812.724530%

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 7428 7294 106 106 1.43% 1.45%
B 7428 7295 83 83 1.12% 1.14%
C 7428 7294 28 28 0.38% 0.38%
D 7428 7295 847 847 11.40% 11.61%

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 868581 5016.08 839 818 173.0
A 0 118 383917 2214.49 839 818 173.0
A 13 164 156731 901.25 839 818 173.0
B 15 204 536442 3206.5 850 827 167.0
B 5 200 236058 1408.23 850 827 167.0
B 14 167 175361 1044.86 850 827 167.0
C 14 234 136679 706.39 822 827 192.3
C 2 53 23620 118.52 822 827 192.3
C 12 4 11244 54.17 822 827 192.3
D 2 63 2865669 14972.48 778 755 191.3
D 8 112 269542 1404.72 778 755 191.3
D 13 239 73952 382.54 778 755 191.3

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