ASTROSAT CZTI

Data Quality Report

Orbit 27099

Creation date: 2024-06-27T19:36:29.555348
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/AS1T03_231T01_9000003910_27099cztM0_level2.evt modeM0/AS1T03_231T01_9000003910_27099cztM0_level2_quad_clean.evt
Size (bytes)521,648,64086,688,000
Size497.5 MB 82.7 MB
Events in quadrant A3,236,285560,054
Events in quadrant B3,863,161569,411
Events in quadrant C3,286,788540,691
Events in quadrant D4,968,942499,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136530
B0155440
C0136630
D0192340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6525350.536398%
B65251462.237548%
C6525530.812261%
D65253395.195402%

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 7540 6526 1 1 0.01% 0.02%
B 7540 6526 56 56 0.74% 0.86%
C 7540 6526 5 5 0.07% 0.08%
D 7540 6526 268 268 3.55% 4.11%

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 14 235 49252 292.82 822 806 165.4
A 13 254 10849 60.7 822 806 165.4
A 12 189 9680 53.63 822 806 165.4
B 10 245 470245 3014.46 823 805 155.7
B 3 112 75847 481.87 823 805 155.7
B 7 205 36958 232.15 823 805 155.7
C 14 238 126600 675.68 792 799 186.2
C 15 208 60210 319.1 792 799 186.2
C 3 233 9163 44.92 792 799 186.2
D 1 52 707422 3707.68 774 755 190.6
D 7 38 427406 2238.51 774 755 190.6
D 13 172 258555 1352.6 774 755 190.6

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