ASTROSAT CZTI

Data Quality Report

Orbit 36674

Creation date: 2024-06-27T21:30:05.274280
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_049T05_9000005232_36674cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36674cztM0_level2_quad_clean.evt
Size (bytes)444,792,96070,629,120
Size424.2 MB 67.4 MB
Events in quadrant A2,855,968448,196
Events in quadrant B3,155,996441,981
Events in quadrant C3,286,070429,410
Events in quadrant D3,780,701415,580

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121452
B0130662
C0134462
D0150542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5769160.277344%
B5769701.213382%
C5769961.664067%
D57691392.409430%

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 7113 5770 7 7 0.10% 0.12%
B 7113 5770 40 40 0.56% 0.69%
C 7113 5770 81 81 1.14% 1.40%
D 7113 5770 139 139 1.95% 2.41%

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 229079 1686.15 668 654 135.5
A 9 143 33756 244.35 668 654 135.5
A 13 254 10384 71.82 668 654 135.5
B 5 255 306905 2408.62 660 642 127.2
B 0 229 99140 774.64 660 642 127.2
B 0 199 42259 327.3 660 642 127.2
C 0 10 330470 2212.19 639 643 149.1
C 15 214 261295 1748.23 639 643 149.1
C 14 254 154064 1029.01 639 643 149.1
D 13 36 212288 1337.69 640 623 158.2
D 12 227 193898 1221.47 640 623 158.2
D 13 171 133220 837.99 640 623 158.2

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