ASTROSAT CZTI

Data Quality Report

Orbit 51306

Creation date: 2025-03-24T03:37:17.074410
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/AS1C07_001T03_9000006456_51306cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51306cztM0_level2_quad_clean.evt
Size (bytes)790,441,92085,199,040
Size753.8 MB 81.3 MB
Events in quadrant A4,791,310633,153
Events in quadrant B4,175,913684,168
Events in quadrant C12,298,403294,915
Events in quadrant D7,501,251522,383

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185633
B0168982
C0408172
D0267452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376791.239021%
B63762804.391468%
C6376375158.829987%
D637675811.888331%

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 7586 6377 17 17 0.22% 0.27%
B 7586 6377 131 131 1.73% 2.05%
C 7586 6377 3191 3191 42.06% 50.04%
D 7586 6377 788 788 10.39% 12.36%

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 12 3 1380162 8170.59 683 666 168.8
A 4 3 168955 996.76 683 666 168.8
A 12 194 164275 969.04 683 666 168.8
B 5 172 493442 3404.26 685 661 144.8
B 5 185 249139 1716.55 685 661 144.8
B 10 247 131924 906.8 685 661 144.8
C 4 12 9524283 70026.36 491 487 136.0
C 10 171 276767 2031.43 491 487 136.0
C 3 233 152078 1114.62 491 487 136.0
D 8 176 2525812 14496.95 619 596 174.2
D 3 12 1675165 9613.49 619 596 174.2
D 12 2 123884 707.78 619 596 174.2

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