ASTROSAT CZTI

Data Quality Report

Orbit 29759

Creation date: 2024-06-27T20:07:30.136408
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_291T01_9000004278_29759cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29759cztM0_level2_quad_clean.evt
Size (bytes)541,080,00072,400,320
Size516.0 MB 69.0 MB
Events in quadrant A3,204,716462,025
Events in quadrant B5,317,793457,483
Events in quadrant C3,328,258431,938
Events in quadrant D4,133,245425,258

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132611
B0197161
C0135911
D0164032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951881.478743%
B59522514.217070%
C59521312.200941%
D59511602.688624%

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 7196 5951 0 0 0.00% 0.00%
B 7197 5952 53 53 0.74% 0.89%
C 7197 5952 1 1 0.01% 0.02%
D 7196 5951 87 87 1.21% 1.46%

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 13 254 12241 69.86 830 817 163.5
A 3 137 7302 39.66 830 817 163.5
A 0 226 6996 37.79 830 817 163.5
B 6 159 1789601 11763.89 815 798 152.1
B 0 229 282426 1852.1 815 798 152.1
B 0 156 23823 151.42 815 798 152.1
C 14 238 128050 720.97 776 783 176.5
C 3 233 82589 463.43 776 783 176.5
C 7 247 72586 406.76 776 783 176.5
D 8 195 789881 4328.69 783 763 182.3
D 7 80 211199 1154.34 783 763 182.3
D 13 153 67575 366.5 783 763 182.3

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