ASTROSAT CZTI

Data Quality Report

Orbit 37460

Creation date: 2024-06-27T21:40:16.593208
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_027T01_9000005324_37460cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37460cztM0_level2_quad_clean.evt
Size (bytes)487,673,28098,490,240
Size465.1 MB 93.9 MB
Events in quadrant A3,141,080661,408
Events in quadrant B2,725,924681,968
Events in quadrant C2,889,062668,869
Events in quadrant D5,656,760601,954

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127453
B0116502
C0119232
D0205262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5258290.551541%
B5258420.798783%
C5258601.141118%
D52584167.911754%

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 7049 5259 14 14 0.20% 0.27%
B 7049 5259 28 28 0.40% 0.53%
C 7049 5259 58 58 0.82% 1.10%
D 7049 5259 449 449 6.37% 8.54%

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 15 222 394160 3301.77 590 577 119.2
A 10 83 289853 2426.74 590 577 119.2
A 13 248 102337 853.67 590 577 119.2
B 5 184 91050 811.73 592 578 111.5
B 4 171 63520 564.73 592 578 111.5
B 5 200 58079 515.91 592 578 111.5
C 15 214 221088 1638.13 578 580 134.6
C 0 10 147681 1092.8 578 580 134.6
C 14 254 144674 1070.46 578 580 134.6
D 12 235 1717280 12682.22 554 537 135.4
D 13 249 798900 5897.81 554 537 135.4
D 12 227 618299 4563.64 554 537 135.4

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