ASTROSAT CZTI

Data Quality Report

Orbit 46983

Creation date: 2024-06-27T23:30:17.594059
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/AS1A13_071T08_9000006292_46983cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46983cztM0_level2_quad_clean.evt
Size (bytes)757,203,840103,927,680
Size722.1 MB 99.1 MB
Events in quadrant A6,957,069743,289
Events in quadrant B10,664,587551,892
Events in quadrant C3,786,385749,713
Events in quadrant D6,099,713631,728

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254522
B0363812
C0160722
D0227812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67454206.226835%
B6744266839.561091%
C67442954.374259%
D674482712.262752%

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 7850 6747 15 15 0.19% 0.22%
B 7849 6746 1869 1869 23.81% 27.71%
C 7849 6746 196 196 2.50% 2.91%
D 7849 6746 624 624 7.95% 9.25%

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 3814157 23743.2 779 762 160.6
A 0 243 46142 282.55 779 762 160.6
A 9 191 36028 219.58 779 762 160.6
B 3 112 7565471 56298.42 695 672 134.4
B 15 201 247758 1838.85 695 672 134.4
B 4 171 25206 182.59 695 672 134.4
C 12 2 704217 3956.36 766 768 177.8
C 14 254 84400 470.37 766 768 177.8
C 13 61 5117 24.46 766 768 177.8
D 13 249 1668728 9106.72 739 716 183.2
D 1 52 1099660 5999.82 739 716 183.2
D 12 233 211485 1150.72 739 716 183.2

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