ASTROSAT CZTI

Data Quality Report

Orbit 14812

Creation date: 2024-06-27T17:00:01.261826
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/AS1G08_010T02_9000002188_14812cztM0_level2.evt modeM0/AS1G08_010T02_9000002188_14812cztM0_level2_quad_clean.evt
Size (bytes)560,741,760107,743,680
Size534.8 MB 102.8 MB
Events in quadrant A3,876,813696,140
Events in quadrant B4,201,299688,399
Events in quadrant C4,092,092678,507
Events in quadrant D4,284,577659,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166113
B0174552
C0169682
D0182232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7773460.591792%
B77731501.929757%
C7773220.283031%
D77732062.650199%

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 8329 7776 1 1 0.01% 0.01%
B 8329 7776 53 53 0.64% 0.68%
C 8329 7776 2 2 0.02% 0.03%
D 8329 7776 147 147 1.76% 1.89%

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 12 189 235691 1219.36 941 920 192.5
A 4 2 17319 85.17 941 920 192.5
A 0 226 8568 39.72 941 920 192.5
B 4 173 173841 959.89 931 910 180.2
B 3 64 138300 762.61 931 910 180.2
B 0 229 77778 426.67 931 910 180.2
C 3 233 534346 2523.45 902 903 211.4
C 0 207 34846 160.57 902 903 211.4
C 13 61 6455 26.26 902 903 211.4
D 7 254 486791 2136.42 893 871 227.4
D 10 70 263570 1154.99 893 871 227.4
D 13 249 47651 205.67 893 871 227.4

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