ASTROSAT CZTI

Data Quality Report

Orbit 49790

Creation date: 2024-12-12T03:08:48.920690
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_037T01_9000006440_49790cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49790cztM0_level2_quad_clean.evt
Size (bytes)2,865,864,960115,476,480
Size2.7 GB 110.1 MB
Events in quadrant A34,597,339586,362
Events in quadrant B10,680,0061,699,306
Events in quadrant C16,366,9728,007
Events in quadrant D43,093,9391,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03540
C03540
D03540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01147161
B0434851
C0610161
D01397971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A173961125264.681536%
B173975253.017762%
C173971733299.626372%
D173971738299.913778%

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 17756 17396 10144 10144 57.13% 58.31%
B 17757 17398 283 283 1.59% 1.63%
C 17756 17396 2634 2634 14.83% 15.14%
D 17756 17396 16342 16342 92.04% 93.94%

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 98 8682978 26661.86 1232 1196 325.6
A 12 50 5794702 17791.93 1232 1196 325.6
A 8 8 2329333 7149.74 1232 1196 325.6
B 10 28 811098 2097.72 1826 1767 385.8
B 4 206 458458 1183.7 1826 1767 385.8
B 1 255 324394 836.22 1826 1767 385.8
C 15 147 6101591 101215.38 121 115 60.3
C 1 44 1794193 29761.37 121 115 60.3
C 15 148 1772941 29408.83 121 115 60.3
D 8 129 9909702 45311.7 408 377 218.7
D 15 168 6747925 30854.06 408 377 218.7
D 14 52 4885204 22336.52 408 377 218.7

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