ASTROSAT CZTI

Data Quality Report

Orbit 20554

Creation date: 2024-06-27T18:16:48.622091
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_9000003040_20554cztM0_level2.evt modeM0/AS1A05_072T04_9000003040_20554cztM0_level2_quad_clean.evt
Size (bytes)519,756,480104,368,320
Size495.7 MB 99.5 MB
Events in quadrant A3,240,193688,973
Events in quadrant B3,356,136699,940
Events in quadrant C3,349,090686,833
Events in quadrant D5,370,257647,366

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135632
B0138452
C0137902
D0202042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6268651.037013%
B6268771.228462%
C62681362.169751%
D62684757.578175%

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 7608 6269 1 1 0.01% 0.02%
B 7608 6269 2 2 0.03% 0.03%
C 7608 6269 0 0 0.00% 0.00%
D 7608 6269 108 108 1.42% 1.72%

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 96 11066 61.67 834 817 166.2
A 8 205 7784 41.92 834 817 166.2
A 0 226 7248 38.7 834 817 166.2
B 0 189 25582 163.36 831 814 151.6
B 3 64 18570 117.11 831 814 151.6
B 12 111 17902 112.71 831 814 151.6
C 14 238 129589 684.36 817 828 188.1
C 8 208 23397 119.95 817 828 188.1
C 7 220 7054 33.09 817 828 188.1
D 1 52 2103018 10815.85 810 788 194.4
D 13 153 99910 509.98 810 788 194.4
D 7 238 33094 166.21 810 788 194.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter