ASTROSAT CZTI

Data Quality Report

Orbit 18699

Creation date: 2024-06-27T17:53:33.844546
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/AS1A05_072T04_9000002794_18699cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18699cztM0_level2_quad_clean.evt
Size (bytes)519,148,80086,477,760
Size495.1 MB 82.5 MB
Events in quadrant A3,480,581546,910
Events in quadrant B3,577,069556,035
Events in quadrant C3,481,327535,514
Events in quadrant D4,733,728517,846

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143562
B0145972
C0142912
D0184142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6632941.417370%
B66331111.673451%
C66331131.703603%
D66333805.728931%

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 7827 6632 0 0 0.00% 0.00%
B 7828 6633 5 5 0.06% 0.08%
C 7828 6634 0 0 0.00% 0.00%
D 7828 6633 255 255 3.26% 3.84%

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 0 13 34190 186.49 890 873 178.7
A 13 254 10770 55.4 890 873 178.7
A 0 226 7943 39.57 890 873 178.7
B 7 220 75471 451.88 877 858 165.1
B 12 111 19003 109.89 877 858 165.1
B 11 111 16438 94.36 877 858 165.1
C 14 238 133912 690.51 842 847 192.7
C 3 233 34195 173.05 842 847 192.7
C 9 54 22092 110.25 842 847 192.7
D 1 52 1098799 5413.47 848 824 202.8
D 12 110 352436 1733.59 848 824 202.8
D 7 238 51794 251.3 848 824 202.8

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