ASTROSAT CZTI

Data Quality Report

Orbit 20240627_A13_093T23_9000006316_level2

Creation date: 2024-07-01T12:24:40.282999
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/AS1A13_093T23_9000006316cztM0_level2.fits modeM0/AS1A13_093T23_9000006316cztM0_level2_quad_clean.evt
Size (bytes)590,639,040568,569,600
Size563.3 MB 542.2 MB
Events in quadrant A3,426,3043,251,531
Events in quadrant B3,449,4263,408,666
Events in quadrant C3,467,4123,160,909
Events in quadrant D2,977,9502,835,538

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013480
B013480
C013480
D013480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02670850
B01401380
C01664050
D01984240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6651841146.184792%
B6651612551.886764%
C6651833615.052768%
D6651733154.983688%

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 74178 66358 0 0 0.00% 0.00%
B 74178 66447 0 0 0.00% 0.00%
C 74178 66425 0 0 0.00% 0.00%
D 74178 66367 0 0 0.00% 0.00%

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 7 110 2847 8.67 893 828 232.8
A 0 29 2615 7.67 893 828 232.8
A 14 95 2499 7.18 893 828 232.8
B 2 9 3273 13.52 909 861 178.4
B 2 8 2674 10.16 909 861 178.4
B 3 17 2519 9.29 909 861 178.4
C 3 202 2591 7.24 916 845 241.3
C 1 81 2587 7.22 916 845 241.3
C 3 203 2522 6.95 916 845 241.3
D 4 16 2177 5.95 854 774 235.8
D 6 38 2163 5.89 854 774 235.8
D 12 6 2150 5.83 854 774 235.8

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