ASTROSAT CZTI

Data Quality Report

Orbit 19288

Creation date: 2024-06-27T18:01:52.319216
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_099T03_9000002854_19288cztM0_level2.evt modeM0/AS1T03_099T03_9000002854_19288cztM0_level2_quad_clean.evt
Size (bytes)843,609,600204,649,920
Size804.5 MB 195.2 MB
Events in quadrant A5,818,7901,350,655
Events in quadrant B5,902,4091,374,305
Events in quadrant C5,729,3971,323,963
Events in quadrant D7,262,9861,297,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254592
B0254472
C0250722
D0297464

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12337990.802464%
B123371471.191538%
C123371761.426603%
D123362221.799611%

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 13712 12337 1 1 0.01% 0.01%
B 13712 12337 20 20 0.15% 0.16%
C 13712 12337 0 0 0.00% 0.00%
D 13711 12336 112 112 0.82% 0.91%

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 5 168 164867 560.71 1453 1422 291.5
A 4 2 40371 133.62 1453 1422 291.5
A 13 254 16994 53.42 1453 1422 291.5
B 7 220 85398 307.33 1447 1409 273.3
B 15 201 67498 241.83 1447 1409 273.3
B 12 111 34022 119.34 1447 1409 273.3
C 14 238 218135 664.88 1401 1411 326.0
C 3 233 23159 66.72 1401 1411 326.0
C 9 15 19172 54.49 1401 1411 326.0
D 10 66 1177285 3429.14 1416 1373 342.9
D 1 52 348191 1011.37 1416 1373 342.9
D 7 223 264615 767.65 1416 1373 342.9

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