ASTROSAT CZTI

Data Quality Report

Orbit 36540

Creation date: 2024-06-27T21:28:09.146561
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/AS1A11_089T02_9000005216_36540cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36540cztM0_level2_quad_clean.evt
Size (bytes)459,959,04067,806,720
Size438.7 MB 64.7 MB
Events in quadrant A2,968,933431,389
Events in quadrant B3,272,546422,301
Events in quadrant C3,575,331401,594
Events in quadrant D3,730,100403,078

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124523
B0133782
C0141022
D0147612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5640581.028369%
B5640881.560284%
C56402324.113475%
D56401061.879433%

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 7133 5641 41 41 0.57% 0.73%
B 7133 5641 45 45 0.63% 0.80%
C 7133 5641 167 167 2.34% 2.96%
D 7133 5641 97 97 1.36% 1.72%

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 232877 1789.54 646 633 129.8
A 10 83 215932 1658.97 646 633 129.8
A 13 254 9361 67.25 646 633 129.8
B 5 255 235598 1901.85 639 621 123.6
B 0 219 187964 1516.31 639 621 123.6
B 5 172 132795 1069.79 639 621 123.6
C 0 10 567624 3983.01 607 610 142.4
C 14 254 323451 2267.81 607 610 142.4
C 15 214 250399 1754.65 607 610 142.4
D 12 235 564567 3662.8 623 604 154.0
D 2 250 272996 1769.12 623 604 154.0
D 2 153 160949 1041.4 623 604 154.0

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