ASTROSAT CZTI

Data Quality Report

Orbit 32766

Creation date: 2024-06-27T20:41:47.419380
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_064T01_9000004730_32766cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32766cztM0_level2_quad_clean.evt
Size (bytes)658,100,16081,178,560
Size627.6 MB 77.4 MB
Events in quadrant A3,342,241534,441
Events in quadrant B3,491,666544,686
Events in quadrant C3,182,241539,117
Events in quadrant D9,472,174383,262

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141404
B0147212
C0136622
D0327632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6539330.504664%
B6539490.749350%
C6539380.581129%
D6539192129.377581%

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 9524 6542 7 7 0.07% 0.11%
B 9524 6542 20 20 0.21% 0.31%
C 9524 6542 26 26 0.27% 0.40%
D 9524 6541 1452 1452 15.25% 22.20%

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 12 16 187255 1167.04 785 768 159.8
A 15 237 32274 197.17 785 768 159.8
A 12 194 31897 194.81 785 768 159.8
B 0 219 79107 516.2 790 770 151.8
B 5 172 68558 446.69 790 770 151.8
B 0 197 50738 329.26 790 770 151.8
C 0 10 131167 729.9 762 770 178.7
C 3 233 23731 128.52 762 770 178.7
C 14 67 17690 94.71 762 770 178.7
D 12 17 3172509 19831.91 642 629 159.9
D 8 195 1916781 11980.58 642 629 159.9
D 2 250 611175 3817.39 642 629 159.9

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