ASTROSAT CZTI

Data Quality Report

Orbit 20629

Creation date: 2024-06-27T18:17:38.879010
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/AS1A05_007T06_9000003050_20629cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20629cztM0_level2_quad_clean.evt
Size (bytes)347,135,04048,265,920
Size331.1 MB 46.0 MB
Events in quadrant A1,911,127322,866
Events in quadrant B2,018,240322,003
Events in quadrant C2,081,753307,403
Events in quadrant D4,228,621225,779

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082911
B085481
C087111
D0152861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4008300.748503%
B4008671.671657%
C4008952.370259%
D400886421.556886%

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 4788 4009 0 0 0.00% 0.00%
B 4788 4009 7 7 0.15% 0.17%
C 4788 4009 0 0 0.00% 0.00%
D 4788 4009 698 698 14.58% 17.41%

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 0 226 4386 38.76 495 483 100.7
A 3 137 4152 36.44 495 483 100.7
A 12 194 3765 32.59 495 483 100.7
B 7 220 32928 342.81 492 479 94.7
B 0 197 15470 158.37 492 479 94.7
B 12 111 11027 111.43 492 479 94.7
C 8 208 150015 1341.41 474 475 111.5
C 14 238 75305 671.24 474 475 111.5
C 3 233 8587 72.77 474 475 111.5
D 1 52 2310415 22792.77 416 404 101.3
D 7 238 203181 2000.79 416 404 101.3
D 1 20 48512 474.68 416 404 101.3

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