ASTROSAT CZTI

Data Quality Report

Orbit 53872

Creation date: 2025-09-13T16:27:48.268298
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/AS1A14_057T04_9000006508_53872cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53872cztM0_level2_quad_clean.evt
Size (bytes)636,724,80081,527,040
Size607.2 MB 77.8 MB
Events in quadrant A4,251,545576,853
Events in quadrant B3,509,579619,514
Events in quadrant C9,942,480332,617
Events in quadrant D5,380,946502,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170281
B0148191
C0339301
D0203451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62473345.346566%
B62481612.576825%
C6248280944.958387%
D62485288.450704%

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 7092 6248 251 251 3.54% 4.02%
B 7093 6248 50 50 0.70% 0.80%
C 7093 6249 2166 2166 30.54% 34.66%
D 7093 6249 477 477 6.72% 7.63%

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 3 62 1029274 6345.12 656 640 162.1
A 10 253 199694 1227.86 656 640 162.1
A 15 174 190728 1172.56 656 640 162.1
B 8 234 278404 1961.21 659 636 141.6
B 0 171 136930 962.32 659 636 141.6
B 5 185 110812 777.91 659 636 141.6
C 13 3 2879851 21939.69 478 474 131.2
C 1 241 2025196 15427.56 478 474 131.2
C 15 224 1970386 15009.93 478 474 131.2
D 8 176 2096853 11528.7 633 606 181.8
D 2 249 146083 800.08 633 606 181.8
D 7 70 119164 652.03 633 606 181.8

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