ASTROSAT CZTI

Data Quality Report

Orbit 36288

Creation date: 2022-06-14T22:38:05.533221
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/AS1A10_071T33_9000005186_36288cztM0_level2.evt modeM0/AS1A10_071T33_9000005186_36288cztM0_level2_quad_clean.evt
Size (bytes)433,238,40073,670,400
Size413.2 MB 70.3 MB
Events in quadrant A2,776,325478,448
Events in quadrant B3,533,353476,826
Events in quadrant C2,949,540466,477
Events in quadrant D3,514,490450,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114813
B0137972
C0118652
D0137802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5102551.078009%
B51022144.194434%
C51021282.508820%
D51022324.547236%

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 7015 5103 46 46 0.66% 0.90%
B 7015 5103 142 142 2.02% 2.78%
C 7015 5103 103 103 1.47% 2.02%
D 7015 5103 213 213 3.04% 4.17%

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 181805 1453.36 619 608 124.7
A 9 143 165811 1325.08 619 608 124.7
A 13 6 26330 206.31 619 608 124.7
B 4 171 405550 3516.11 607 591 115.2
B 5 172 313694 2718.56 607 591 115.2
B 5 236 198054 1714.5 607 591 115.2
C 0 10 337514 2413.3 598 604 139.6
C 15 214 212761 1519.69 598 604 139.6
C 0 207 55189 390.99 598 604 139.6
D 12 6 671712 4650.73 593 577 144.3
D 13 171 145599 1004.95 593 577 144.3
D 13 249 118959 820.35 593 577 144.3

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