ASTROSAT CZTI

Data Quality Report

Orbit 41251

Creation date: 2024-06-27T22:26:32.583916
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/AS1A12_052T04_9000005638_41251cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41251cztM0_level2_quad_clean.evt
Size (bytes)460,221,120121,296,960
Size438.9 MB 115.7 MB
Events in quadrant A4,411,347811,269
Events in quadrant B3,317,794834,063
Events in quadrant C4,203,034785,327
Events in quadrant D4,522,927721,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175793
B0152212
C0170862
D0187522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7471891.191273%
B7471150.200776%
C74711471.967608%
D74712703.613974%

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 10338 7473 72 72 0.70% 0.96%
B 10338 7473 0 0 0.00% 0.00%
C 10338 7473 134 134 1.30% 1.79%
D 10338 7473 254 254 2.46% 3.40%

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 635229 3775.9 824 807 168.0
A 0 8 566356 3365.99 824 807 168.0
A 13 254 12481 69.48 824 807 168.0
B 0 186 62662 389.7 815 790 158.8
B 5 255 29694 182.05 815 790 158.8
B 12 111 20333 123.09 815 790 158.8
C 0 10 350057 1876.12 799 804 186.2
C 9 54 328697 1761.38 799 804 186.2
C 15 214 313053 1677.34 799 804 186.2
D 1 52 994949 5033.92 799 775 197.5
D 13 249 232806 1174.87 799 775 197.5
D 12 16 73425 367.86 799 775 197.5

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