ASTROSAT CZTI

Data Quality Report

Orbit 08571

Creation date: 2024-06-27T15:34:25.209898
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/AS1G07_060T01_9000001200_08571cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08571cztM0_level2_quad_clean.evt
Size (bytes)428,129,28075,706,560
Size408.3 MB 72.2 MB
Events in quadrant A3,083,137459,446
Events in quadrant B3,314,048463,827
Events in quadrant C2,966,862460,319
Events in quadrant D3,146,995442,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138832
B0143131
C0136371
D0141551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6691450.672545%
B66911051.569272%
C6691120.179345%
D6691220.328800%

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 7526 6692 3 3 0.04% 0.04%
B 7526 6692 25 25 0.33% 0.37%
C 7526 6692 0 0 0.00% 0.00%
D 7526 6692 13 13 0.17% 0.19%

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 5 112 54897 343.14 778 761 157.8
A 15 223 22167 135.68 778 761 157.8
A 15 239 10804 63.66 778 761 157.8
B 10 16 208252 1388.07 783 764 149.5
B 0 214 21525 138.89 783 764 149.5
B 10 252 20251 130.37 783 764 149.5
C 13 61 5759 28.31 760 762 176.5
C 8 222 3042 12.92 760 762 176.5
C 3 202 1848 6.15 760 762 176.5
D 1 52 195527 1020.01 748 726 191.0
D 12 233 37546 192.79 748 726 191.0
D 7 71 23499 119.24 748 726 191.0

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