ASTROSAT CZTI

Data Quality Report

Orbit 30450

Creation date: 2024-06-27T20:15:23.968933
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/AS1A10_121T02_9000004378_30450cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30450cztM0_level2_quad_clean.evt
Size (bytes)1,261,722,240121,308,480
Size1.2 GB 115.7 MB
Events in quadrant A5,108,292783,613
Events in quadrant B8,271,168782,413
Events in quadrant C11,608,514719,875
Events in quadrant D12,510,460652,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217422
B0322692
C0421554
D0443432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106041211.141079%
B106041841.735194%
C10603145413.713100%
D10603309829.218146%

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 12229 10606 6 6 0.05% 0.06%
B 12229 10606 3 3 0.02% 0.03%
C 12228 10605 809 809 6.62% 7.63%
D 12228 10605 2758 2758 22.55% 26.01%

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 4 2 46559 173.43 1304 1275 261.1
A 8 192 22644 81.84 1304 1275 261.1
A 13 254 18125 64.53 1304 1275 261.1
B 6 159 2922684 11928.15 1282 1249 244.9
B 0 229 269895 1096.87 1282 1249 244.9
B 12 111 30681 120.17 1282 1249 244.9
C 3 233 6692369 23840.1 1200 1207 280.7
C 14 238 189860 672.16 1200 1207 280.7
C 2 114 24298 82.27 1200 1207 280.7
D 13 104 7738447 26657.04 1108 1086 290.3
D 8 195 183325 627.86 1108 1086 290.3
D 2 250 120544 411.56 1108 1086 290.3

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