ASTROSAT CZTI

Data Quality Report

Orbit 27208

Creation date: 2024-06-27T19:37:44.348996
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/AS1T03_243T01_9000003918_27208cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27208cztM0_level2_quad_clean.evt
Size (bytes)477,590,40088,545,600
Size455.5 MB 84.4 MB
Events in quadrant A3,205,203573,625
Events in quadrant B3,512,954579,396
Events in quadrant C3,121,911552,506
Events in quadrant D4,198,595538,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134610
B0144510
C0132320
D0166110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267801.276528%
B62671642.616882%
C62671201.914792%
D62671612.569012%

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 7292 6268 5 5 0.07% 0.08%
B 7291 6267 35 35 0.48% 0.56%
C 7292 6268 1 1 0.01% 0.02%
D 7292 6268 82 82 1.12% 1.31%

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 14 235 55907 339.62 811 796 162.3
A 15 174 15820 92.58 811 796 162.3
A 13 254 9580 54.13 811 796 162.3
B 3 64 357768 2328.43 797 777 153.3
B 12 111 18596 116.22 797 777 153.3
B 11 111 16641 103.47 797 777 153.3
C 14 238 124144 685.65 767 772 179.9
C 15 208 5451 26.0 767 772 179.9
C 4 224 5395 25.69 767 772 179.9
D 15 0 487442 2631.13 774 756 185.0
D 12 17 342613 1848.15 774 756 185.0
D 1 52 289366 1560.29 774 756 185.0

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