ASTROSAT CZTI

Data Quality Report

Orbit 33939

Creation date: 2024-06-27T20:52:46.541331
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/AS1A11_086T01_9000004820_33939cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33939cztM0_level2_quad_clean.evt
Size (bytes)20,134,0805,100,480
Size19.2 MB 4.9 MB
Events in quadrant A147,68838,403
Events in quadrant B148,71337,150
Events in quadrant C148,28627,946
Events in quadrant D145,14925,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169
B0168
C0167
D01610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05147
B05149
C05555
D05545

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050994517
B055514965
C059485376
D072026648

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28731.045296%
B27910.358423%
C22110.452489%
D21262.830189%

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 3467 412 0 0 0.00% 0.00%
B 3464 395 0 0 0.00% 0.00%
C 3461 353 0 0 0.00% 0.00%
D 3165 328 4 4 0.13% 1.22%

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 13 254 500 46.23 38 37 10.0
A 9 191 427 38.94 38 37 10.0
A 3 137 380 34.25 38 37 10.0
B 5 172 2834 297.43 36 35 9.4
B 0 199 1781 185.53 36 35 9.4
B 11 111 846 86.18 36 35 9.4
C 3 233 23106 2737.78 28 28 8.4
C 15 214 9411 1113.12 28 28 8.4
C 14 67 3766 443.44 28 28 8.4
D 13 249 18331 2127.05 27 26 8.6
D 8 195 14233 1650.86 27 26 8.6
D 2 250 4457 514.88 27 26 8.6

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