ASTROSAT CZTI

Data Quality Report

Orbit 46502

Creation date: 2024-06-27T23:23:56.071385
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_068T06_9000006220_46502cztM0_level2.fits modeM0/AS1A13_068T06_9000006220_46502cztM0_level2_quad_clean.evt
Size (bytes)511,228,800104,575,680
Size487.5 MB 99.7 MB
Events in quadrant A5,884,889715,402
Events in quadrant B3,230,238745,427
Events in quadrant C2,920,956709,632
Events in quadrant D6,398,936555,880

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213324
B0138122
C0130532
D0232792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63041302.062183%
B6304871.380076%
C6305370.586836%
D630597315.432197%

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 7469 6305 20 20 0.27% 0.32%
B 7469 6305 23 23 0.31% 0.36%
C 7470 6306 21 21 0.28% 0.33%
D 7470 6306 926 926 12.40% 14.68%

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 3027445 19838.73 730 716 152.6
A 0 243 14368 89.48 730 716 152.6
A 9 191 11020 67.54 730 716 152.6
B 5 255 216277 1497.93 732 711 143.9
B 0 190 40263 274.84 732 711 143.9
B 15 201 25183 170.05 732 711 143.9
C 14 254 97358 570.53 716 721 169.4
C 2 14 22845 130.61 716 721 169.4
C 12 249 7000 37.07 716 721 169.4
D 1 52 2614653 15537.91 660 640 168.2
D 7 80 668779 3971.47 660 640 168.2
D 13 112 292499 1734.83 660 640 168.2

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