ASTROSAT CZTI

Data Quality Report

Orbit 36623

Creation date: 2024-06-27T21:29:19.106545
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_073T02_9000005226_36623cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36623cztM0_level2_quad_clean.evt
Size (bytes)485,357,76055,321,920
Size462.9 MB 52.8 MB
Events in quadrant A2,894,484335,413
Events in quadrant B2,959,746343,561
Events in quadrant C3,617,262340,865
Events in quadrant D4,888,571303,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114864
B0118172
C0138132
D0180342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5006240.479425%
B5006611.218538%
C50062695.373552%
D50063997.970435%

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 7130 5008 9 9 0.13% 0.18%
B 7130 5008 37 37 0.52% 0.74%
C 7130 5008 198 198 2.78% 3.95%
D 7130 5008 355 355 4.98% 7.09%

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 196661 1509.77 654 642 129.8
A 15 223 127621 978.01 654 642 129.8
A 7 192 37260 282.04 654 642 129.8
B 5 255 126022 1040.09 649 634 120.6
B 0 213 91385 752.78 649 634 120.6
B 5 200 78209 643.49 649 634 120.6
C 0 10 490719 3419.68 629 635 143.3
C 14 254 389604 2714.12 629 635 143.3
C 15 214 211615 1472.16 629 635 143.3
D 12 235 1710769 11290.62 623 607 151.5
D 2 249 484481 3194.57 623 607 151.5
D 12 6 46600 303.65 623 607 151.5

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