ASTROSAT CZTI

Data Quality Report

Orbit 39376

Creation date: 2024-06-27T22:03:50.308357
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/AS1A12_018T01_9000005470_39376cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39376cztM0_level2_quad_clean.evt
Size (bytes)344,298,24074,396,160
Size328.3 MB 70.9 MB
Events in quadrant A2,350,825531,955
Events in quadrant B2,920,864518,157
Events in quadrant C2,122,031502,107
Events in quadrant D5,000,104383,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0313
C0314
D0321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01011
B01013
C01005
D01007

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010389703
B0129381154
C09890674
D0203582473

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4565100.219058%
B45252525.569061%
C454350.110059%
D435070416.183908%

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 7078 4808 2 2 0.03% 0.04%
B 7078 4779 153 153 2.16% 3.20%
C 7078 4800 2 2 0.03% 0.04%
D 7078 4685 577 577 8.15% 12.32%

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 377277 3673.2 505 495 102.6
A 13 248 8536 78.39 505 495 102.6
A 13 254 5940 53.08 505 495 102.6
B 5 200 527807 5623.07 485 474 93.8
B 5 172 441454 4702.27 485 474 93.8
B 4 170 28044 293.99 485 474 93.8
C 15 214 193718 1739.72 479 481 111.1
C 3 233 24067 212.35 479 481 111.1
C 14 254 23840 210.3 479 481 111.1
D 12 235 3152933 30076.03 429 416 104.8
D 13 249 71053 673.9 429 416 104.8
D 6 239 62833 595.48 429 416 104.8

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