ASTROSAT CZTI

Data Quality Report

Orbit 29327

Creation date: 2024-06-27T20:02:45.873918
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_050T03_9000004216_29327cztM0_level2.evt modeM0/AS1A10_050T03_9000004216_29327cztM0_level2_quad_clean.evt
Size (bytes)899,343,36078,140,160
Size857.7 MB 74.5 MB
Events in quadrant A3,410,069579,713
Events in quadrant B4,745,301567,780
Events in quadrant C3,716,513535,482
Events in quadrant D14,947,511250,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135351
B0180561
C0148191
D0485631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61801151.860841%
B61813675.937551%
C61801532.475728%
D6180603097.572816%

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 7415 6181 11 11 0.15% 0.18%
B 7416 6182 174 174 2.35% 2.81%
C 7415 6181 24 24 0.32% 0.39%
D 7415 6181 5086 5086 68.59% 82.28%

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 1 113 59570 340.22 859 843 172.6
A 15 174 38471 217.99 859 843 172.6
A 13 254 13008 70.47 859 843 172.6
B 10 245 1223682 7950.78 825 808 153.8
B 0 190 106118 684.7 825 808 153.8
B 5 172 102148 658.88 825 808 153.8
C 3 233 358762 1917.38 805 814 186.7
C 14 238 129526 689.46 805 814 186.7
C 10 9 38465 201.68 805 814 186.7
D 12 33 12437543 120302.87 434 424 103.4
D 8 195 359663 3474.87 434 424 103.4
D 12 17 177121 1709.17 434 424 103.4

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