ASTROSAT CZTI

Data Quality Report

Orbit 24945

Creation date: 2024-06-27T19:11:47.047367
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_200T01_9000003654_24945cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24945cztM0_level2_quad_clean.evt
Size (bytes)680,425,920138,121,920
Size648.9 MB 131.7 MB
Events in quadrant A3,480,553949,782
Events in quadrant B3,698,651960,883
Events in quadrant C6,863,728883,433
Events in quadrant D6,054,930865,309

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154511
B0158701
C0256741
D0231691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75281742.311371%
B75291752.324346%
C75294135.485456%
D75284886.482465%

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 7618 7530 0 0 0.00% 0.00%
B 7619 7531 15 15 0.20% 0.20%
C 7619 7531 1 1 0.01% 0.01%
D 7618 7530 337 337 4.42% 4.48%

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 13 254 12641 64.02 902 878 183.7
A 3 137 8367 40.76 902 878 183.7
A 0 226 7720 37.24 902 878 183.7
B 3 64 70384 408.88 889 864 170.0
B 0 229 26908 153.18 889 864 170.0
B 10 251 26736 152.17 889 864 170.0
C 7 247 3412771 17314.2 845 848 197.1
C 14 238 134223 676.83 845 848 197.1
C 3 233 15218 72.92 845 848 197.1
D 1 52 1816193 8808.49 851 824 206.1
D 1 3 457020 2213.54 851 824 206.1
D 8 195 411033 1990.41 851 824 206.1

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