ASTROSAT CZTI

Data Quality Report

Orbit 39475

Creation date: 2024-06-27T22:05:03.620637
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/AS1C06_010T05_9000005484_39475cztM0_level2.fits modeM0/AS1C06_010T05_9000005484_39475cztM0_level2_quad_clean.evt
Size (bytes)373,561,92088,145,280
Size356.3 MB 84.1 MB
Events in quadrant A2,810,170609,228
Events in quadrant B2,453,492635,219
Events in quadrant C4,752,303532,975
Events in quadrant D3,419,822538,654

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114803
B0108402
C0174952
D0135672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5040130.257937%
B5040460.912698%
C504064512.797619%
D50402094.146825%

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 7074 5041 9 9 0.13% 0.18%
B 7074 5041 13 13 0.18% 0.26%
C 7073 5040 604 604 8.54% 11.98%
D 7074 5041 187 187 2.64% 3.71%

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 420550 3768.11 553 543 111.5
A 15 222 180888 1617.97 553 543 111.5
A 15 174 41057 363.47 553 543 111.5
B 8 3 212175 2017.93 559 544 104.9
B 5 172 27932 261.15 559 544 104.9
B 12 111 12832 117.17 559 544 104.9
C 9 187 1643127 13958.0 508 510 117.7
C 15 208 902797 7667.11 508 510 117.7
C 15 214 197587 1674.65 508 510 117.7
D 12 227 523848 4033.43 535 520 129.7
D 13 249 253166 1947.21 535 520 129.7
D 2 249 249972 1922.59 535 520 129.7

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