ASTROSAT CZTI

Data Quality Report

Orbit 24387

Creation date: 2024-06-27T19:05:27.890029
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/AS1A08_008T01_9000003596_24387cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24387cztM0_level2_quad_clean.evt
Size (bytes)862,341,12093,888,000
Size822.4 MB 89.5 MB
Events in quadrant A3,084,822716,636
Events in quadrant B3,123,163726,135
Events in quadrant C15,175,657311,991
Events in quadrant D4,299,581640,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133952
B0134282
C0494682
D0171492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6392280.438048%
B6392370.578849%
C6392610395.478723%
D63924146.476846%

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 7512 6393 0 0 0.00% 0.00%
B 7512 6393 1 1 0.01% 0.02%
C 7512 6393 5513 5513 73.39% 86.23%
D 7512 6392 303 303 4.03% 4.74%

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 9660 55.66 798 780 159.5
A 6 10 8091 45.83 798 780 159.5
A 3 137 6952 38.69 798 780 159.5
B 12 111 17779 114.77 790 773 148.2
B 11 111 15660 100.47 790 773 148.2
B 14 111 13662 86.99 790 773 148.2
C 7 247 13255111 127436.54 446 448 104.0
C 2 16 76124 727.58 446 448 104.0
C 14 238 67778 647.34 446 448 104.0
D 1 52 1008890 5612.05 735 711 179.6
D 12 233 387831 2154.91 735 711 179.6
D 8 195 31715 172.58 735 711 179.6

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