ASTROSAT CZTI

Data Quality Report

Orbit 33756

Creation date: 2024-06-27T20:52:18.430635
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_33756cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33756cztM0_level2_quad_clean.evt
Size (bytes)489,968,64070,894,080
Size467.3 MB 67.6 MB
Events in quadrant A2,621,625457,552
Events in quadrant B3,385,437457,393
Events in quadrant C3,684,547453,754
Events in quadrant D4,808,389427,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109043
B0132942
C0144492
D0178392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500290.179928%
B50022044.078369%
C50021553.098760%
D50022474.938025%

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 7096 5003 0 0 0.00% 0.00%
B 7096 5003 168 168 2.37% 3.36%
C 7096 5003 127 127 1.79% 2.54%
D 7096 5003 164 164 2.31% 3.28%

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 10 83 10287 71.95 672 660 133.8
A 13 254 10258 71.73 672 660 133.8
A 15 169 8803 60.86 672 660 133.8
B 5 172 442170 3601.51 657 643 122.6
B 5 255 152429 1238.11 657 643 122.6
B 0 190 43486 349.47 657 643 122.6
C 0 239 514831 3456.05 658 666 148.8
C 15 214 219369 1470.05 658 666 148.8
C 0 10 112695 753.02 658 666 148.8
D 8 195 1318875 8331.56 655 639 158.2
D 15 0 256367 1616.26 655 639 158.2
D 1 47 253588 1598.7 655 639 158.2

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