ASTROSAT CZTI

Data Quality Report

Orbit 22250

Creation date: 2024-06-27T18:38:32.852393
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/AS1A07_018T02_9000003292_22250cztM0_level2.evt modeM0/AS1A07_018T02_9000003292_22250cztM0_level2_quad_clean.evt
Size (bytes)491,558,40094,838,400
Size468.8 MB 90.4 MB
Events in quadrant A3,338,912613,483
Events in quadrant B3,453,756622,535
Events in quadrant C3,359,014591,376
Events in quadrant D4,271,637569,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140892
B0144042
C0141522
D0170882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68261301.904483%
B68261562.285379%
C68251542.256410%
D68252563.750916%

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 7601 6827 0 0 0.00% 0.00%
B 7601 6827 13 13 0.17% 0.19%
C 7600 6826 1 1 0.01% 0.01%
D 7600 6826 183 183 2.41% 2.68%

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 13 254 10486 55.55 866 849 173.5
A 0 226 7578 38.79 866 849 173.5
A 3 137 7560 38.68 866 849 173.5
B 3 64 37012 219.86 857 837 164.5
B 4 173 23516 137.83 857 837 164.5
B 12 111 20041 116.71 857 837 164.5
C 14 238 129192 670.64 822 828 191.4
C 10 22 21454 107.76 822 828 191.4
C 13 61 5762 25.78 822 828 191.4
D 1 52 1062959 5281.12 831 809 201.1
D 2 234 27735 133.88 831 809 201.1
D 13 172 24368 117.14 831 809 201.1

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