ASTROSAT CZTI

Data Quality Report

Orbit 31735

Creation date: 2024-06-27T20:32:06.048188
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_034T01_9000004632_31735cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31735cztM0_level2_quad_clean.evt
Size (bytes)294,094,08055,218,240
Size280.5 MB 52.7 MB
Events in quadrant A3,023,032337,020
Events in quadrant B2,338,217376,102
Events in quadrant C1,714,391371,881
Events in quadrant D1,623,390370,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B041
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09024
B08925
C08824
D08822

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154284373
B0145335301
C0103663208
D0100993217

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A302366722.064175%
B29611304.390409%
C30661444.696673%
D3066461.500326%

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 6526 3269 558 558 8.55% 17.07%
B 6526 3164 0 0 0.00% 0.00%
C 6526 3271 7 7 0.11% 0.21%
D 6526 3282 1 1 0.02% 0.03%

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 0 13 1736462 24620.33 333 326 70.5
A 13 254 5034 66.76 333 326 70.5
A 3 137 3532 45.46 333 326 70.5
B 6 159 802472 11416.88 352 342 70.3
B 4 80 133431 1894.28 352 342 70.3
B 12 111 9139 125.21 352 342 70.3
C 0 10 259183 2991.01 354 356 86.5
C 14 238 56455 648.28 354 356 86.5
C 3 233 7447 81.94 354 356 86.5
D 8 195 269739 3137.29 355 344 85.9
D 2 234 14447 164.24 355 344 85.9
D 2 250 5002 54.25 355 344 85.9

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