ASTROSAT CZTI

Data Quality Report

Orbit 49838

Creation date: 2024-12-16T09:21:25.080151
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_037T01_9000006440_49838cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49838cztM0_level2_quad_clean.evt
Size (bytes)1,250,634,24056,646,720
Size1.2 GB 54.0 MB
Events in quadrant A14,999,555367,131
Events in quadrant B3,598,574662,572
Events in quadrant C11,623,844144,502
Events in quadrant D15,590,32496,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0487830
B0149960
C0388780
D0506920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244545587.363869%
B62451352.161729%
C6245607897.325861%
D62456245100.000000%

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 7394 6244 5048 5048 68.27% 80.85%
B 7395 6246 74 74 1.00% 1.18%
C 7394 6244 2228 2228 30.13% 35.68%
D 7394 6244 5773 5773 78.08% 92.46%

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 4 4 7751441 69792.38 417 406 111.1
A 3 84 3862576 34776.0 417 406 111.1
A 4 13 280638 2523.28 417 406 111.1
B 0 229 318842 2185.26 678 655 145.6
B 5 185 158523 1084.21 678 655 145.6
B 4 206 128622 878.86 678 655 145.6
C 15 230 5148177 84506.19 179 175 60.9
C 15 197 2321023 38097.5 179 175 60.9
C 15 174 846371 13890.59 179 175 60.9
D 8 176 5231795 96646.18 131 124 54.1
D 8 129 2410703 44531.33 131 124 54.1
D 7 61 1568827 28979.11 131 124 54.1

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