ASTROSAT CZTI

Data Quality Report

Orbit 37279

Creation date: 2024-06-27T21:37:50.119317
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/AS1A10_103T03_9000005296_37279cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37279cztM0_level2_quad_clean.evt
Size (bytes)461,903,04088,292,160
Size440.5 MB 84.2 MB
Events in quadrant A2,874,815573,171
Events in quadrant B3,191,109573,915
Events in quadrant C4,316,106553,264
Events in quadrant D3,204,873559,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124433
B0134262
C0165892
D0137532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5917140.236606%
B5917360.608416%
C59174838.162920%
D5917971.639344%

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 7530 6125 6 6 0.08% 0.10%
B 7530 6125 20 20 0.27% 0.33%
C 7530 6125 439 439 5.83% 7.17%
D 7530 6125 88 88 1.17% 1.44%

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 276580 2096.29 651 639 131.6
A 13 248 31496 234.42 651 639 131.6
A 9 143 30568 227.37 651 639 131.6
B 0 213 217823 1751.04 647 631 124.0
B 0 190 152667 1225.74 647 631 124.0
B 5 172 111289 892.14 647 631 124.0
C 1 23 1546371 10833.51 610 614 142.7
C 15 214 242389 1694.49 610 614 142.7
C 0 10 109226 761.21 610 614 142.7
D 12 218 246136 1597.19 630 611 153.7
D 12 17 192842 1250.5 630 611 153.7
D 13 249 184031 1193.19 630 611 153.7

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