ASTROSAT CZTI

Data Quality Report

Orbit 46141

Creation date: 2024-06-27T23:19:36.147264
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_098T02_9000006174_46141cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46141cztM0_level2_quad_clean.evt
Size (bytes)628,228,800104,961,600
Size599.1 MB 100.1 MB
Events in quadrant A6,493,884711,574
Events in quadrant B4,484,585769,202
Events in quadrant C3,245,600735,241
Events in quadrant D8,542,376520,881

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234562
B0175762
C0139392
D0297082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63153836.064925%
B63151682.660333%
C6315851.346002%
D6315171227.110055%

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 7560 6316 205 205 2.71% 3.25%
B 7560 6316 78 78 1.03% 1.23%
C 7560 6316 43 43 0.57% 0.68%
D 7560 6316 1347 1347 17.82% 21.33%

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 10 83 3162376 20740.6 735 720 152.4
A 0 247 322822 2113.0 735 720 152.4
A 10 255 48100 310.81 735 720 152.4
B 3 112 1352130 9142.11 748 725 147.8
B 0 155 47889 319.06 748 725 147.8
B 5 255 41440 275.43 748 725 147.8
C 12 2 334720 1917.01 734 741 174.2
C 14 254 32586 182.79 734 741 174.2
C 2 14 9308 49.17 734 741 174.2
D 1 52 2638066 16119.68 645 624 163.6
D 5 235 1167153 7129.66 645 624 163.6
D 8 129 1034882 6321.24 645 624 163.6

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