ASTROSAT CZTI

Data Quality Report

Orbit 34851

Creation date: 2024-06-27T21:06:08.535517
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/AS1C07_005T01_9000004992_34851cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34851cztM0_level2_quad_clean.evt
Size (bytes)870,344,64078,750,720
Size830.0 MB 75.1 MB
Events in quadrant A12,419,181266,754
Events in quadrant B6,746,658543,753
Events in quadrant C3,069,367601,591
Events in quadrant D3,744,028576,753

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407473
B0237082
C0125322
D0149032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5623474984.456696%
B5623145725.911435%
C5623871.547217%
D56231142.027388%

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 7205 5623 4299 4299 59.67% 76.45%
B 7205 5623 1330 1330 18.46% 23.65%
C 7206 5624 71 71 0.99% 1.26%
D 7206 5624 98 98 1.36% 1.74%

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 15 169 11044627 161723.49 336 329 68.3
A 7 3 21191 305.49 336 329 68.3
A 10 83 18073 259.83 336 329 68.3
B 5 14 1262600 11423.49 578 564 110.5
B 5 31 1255944 11363.24 578 564 110.5
B 5 15 1253455 11340.71 578 564 110.5
C 15 214 256613 1782.46 617 621 143.6
C 0 10 203168 1410.33 617 621 143.6
C 12 250 99102 685.72 617 621 143.6
D 8 195 675166 4464.18 616 600 151.1
D 2 250 187124 1234.39 616 600 151.1
D 12 233 178333 1176.21 616 600 151.1

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