ASTROSAT CZTI

Data Quality Report

Orbit 33916

Creation date: 2024-06-27T20:54:08.733605
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/AS1T04_091T01_9000004842_33916cztM0_level2.evt modeM0/AS1T04_091T01_9000004842_33916cztM0_level2_quad_clean.evt
Size (bytes)421,390,08030,479,040
Size401.9 MB 29.1 MB
Events in quadrant A2,052,430178,457
Events in quadrant B4,614,300173,312
Events in quadrant C2,306,103168,955
Events in quadrant D3,547,281149,597

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09618
B09628
C09929
D09626

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02210
C0229
D0229

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104422334
B0194823379
C0119812791
D0180725012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3638210.577240%
B355599527.988748%
C3592551.531180%
D34652035.858586%

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 6949 3858 13 13 0.19% 0.34%
B 6949 3778 783 783 11.27% 20.73%
C 6949 3819 37 37 0.53% 0.97%
D 6949 3631 138 138 1.99% 3.80%

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 15 169 151978 1560.57 485 475 97.1
A 7 16 15423 153.97 485 475 97.1
A 10 83 7809 75.54 485 475 97.1
B 4 251 2074330 26207.54 419 410 79.1
B 5 172 748260 9450.37 419 410 79.1
B 0 219 45841 574.1 419 410 79.1
C 15 214 159694 1520.59 456 461 104.7
C 0 10 139129 1324.21 456 461 104.7
C 0 207 103196 981.07 456 461 104.7
D 8 195 673793 6208.92 443 431 108.5
D 1 52 336610 3099.83 443 431 108.5
D 2 250 206464 1899.78 443 431 108.5

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