ASTROSAT CZTI

Data Quality Report

Orbit 02955

Creation date: 2024-06-27T14:22:41.388816
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/AS1G05_238T04_9000000416_02955cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02955cztM0_level2_common_clean.evt
Size (bytes)364,360,32062,360,640
Size347.5 MB 59.5 MB
Events in quadrant A2,852,984387,879
Events in quadrant B2,550,627384,947
Events in quadrant C2,647,312389,201
Events in quadrant D2,648,679382,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119523
B0110492
C0115352
D0114102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49221392.824055%
B4922701.422186%
C4922621.259651%
D4922701.422186%

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 7048 4923 106 106 1.50% 2.15%
B 7048 4923 49 49 0.70% 1.00%
C 7048 4923 48 48 0.68% 0.98%
D 7048 4923 60 60 0.85% 1.22%

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 14 238 638168 6149.91 510 499 103.7
A 0 31 92463 886.93 510 499 103.7
A 0 50 68593 656.72 510 499 103.7
B 2 249 192479 1896.52 524 512 101.2
B 6 36 97784 960.99 524 512 101.2
B 6 203 59283 580.62 524 512 101.2
C 1 192 530042 4398.96 510 511 120.4
C 6 80 49335 405.59 510 511 120.4
C 0 219 21432 173.8 510 511 120.4
D 13 239 135722 1112.47 503 492 121.6
D 14 81 130359 1068.35 503 492 121.6
D 12 1 100431 822.15 503 492 121.6

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
Veto Counter