ASTROSAT CZTI

Data Quality Report

Orbit 45140

Creation date: 2024-06-27T23:09:52.611614
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/AS1A13_017T02_9000006046_45140cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45140cztM0_level2_quad_clean.evt
Size (bytes)627,284,160101,111,040
Size598.2 MB 96.4 MB
Events in quadrant A10,112,241527,006
Events in quadrant B3,322,888779,638
Events in quadrant C3,967,453696,862
Events in quadrant D5,322,953613,176

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343391
B0140961
C0161731
D0201851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6374229335.974270%
B63741101.725761%
C63744386.871666%
D637570110.996078%

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 7544 6375 1744 1744 23.12% 27.36%
B 7544 6375 25 25 0.33% 0.39%
C 7543 6374 371 371 4.92% 5.82%
D 7545 6376 558 558 7.40% 8.75%

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 15 223 5508209 40559.03 660 647 135.8
A 10 83 2054416 15124.46 660 647 135.8
A 3 137 7255 48.66 660 647 135.8
B 4 170 115220 771.25 755 732 148.4
B 0 186 48861 324.22 755 732 148.4
B 10 3 45216 299.67 755 732 148.4
C 12 2 1089206 6496.83 713 719 167.5
C 11 16 65400 386.06 713 719 167.5
C 14 254 15261 86.8 713 719 167.5
D 13 29 1216271 6799.79 702 680 178.8
D 13 174 392914 2194.08 702 680 178.8
D 13 249 329735 1840.67 702 680 178.8

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