ASTROSAT CZTI

Data Quality Report

Orbit 24302

Creation date: 2024-06-27T19:04:32.674930
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/AS1A07_145T01_9000003594_24302cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24302cztM0_level2_quad_clean.evt
Size (bytes)549,201,600112,461,120
Size523.8 MB 107.3 MB
Events in quadrant A3,159,190753,099
Events in quadrant B3,275,138789,279
Events in quadrant C4,366,982735,796
Events in quadrant D5,410,596694,348

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132812
B0136522
C0171834
D0202282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6202410.661077%
B6202610.983554%
C62013465.579745%
D62015619.046928%

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 7517 6203 0 0 0.00% 0.00%
B 7517 6202 2 2 0.03% 0.03%
C 7516 6201 145 145 1.93% 2.34%
D 7516 6201 493 493 6.56% 7.95%

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 9615 53.71 819 806 164.0
A 3 137 6879 37.03 819 806 164.0
A 0 226 6871 36.98 819 806 164.0
B 0 190 23044 145.07 829 812 153.3
B 12 111 18155 113.17 829 812 153.3
B 11 111 15951 98.78 829 812 153.3
C 7 247 648155 3565.65 789 797 181.6
C 2 16 468902 2578.33 789 797 181.6
C 14 238 128221 701.85 789 797 181.6
D 1 52 1631521 8811.15 772 752 185.1
D 9 1 348405 1878.39 772 752 185.1
D 12 233 337401 1818.94 772 752 185.1

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