ASTROSAT CZTI

Data Quality Report

Orbit 46854

Creation date: 2024-06-27T23:28:32.251129
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_053T01_9000006274_46854cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46854cztM0_level2_quad_clean.evt
Size (bytes)526,973,760110,324,160
Size502.6 MB 105.2 MB
Events in quadrant A6,630,639723,446
Events in quadrant B4,371,521751,996
Events in quadrant C3,183,831724,236
Events in quadrant D4,792,596666,027

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239542
B0176582
C0145382
D0190912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68153715.443874%
B68152553.741746%
C6815590.865737%
D68151392.039618%

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 7670 6816 56 56 0.73% 0.82%
B 7670 6816 75 75 0.98% 1.10%
C 7670 6816 42 42 0.55% 0.62%
D 7670 6816 73 73 0.95% 1.07%

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 3601208 23373.53 750 733 154.0
A 13 248 85703 551.61 750 733 154.0
A 0 243 15524 96.02 750 733 154.0
B 3 112 1271884 8574.31 751 729 148.3
B 0 199 40689 269.54 751 729 148.3
B 5 172 28507 187.37 751 729 148.3
C 14 254 284661 1633.26 739 741 173.8
C 0 207 5939 29.9 739 741 173.8
C 13 61 4884 23.83 739 741 173.8
D 1 52 1509536 8236.13 736 712 183.2
D 13 249 282363 1537.43 736 712 183.2
D 2 37 38484 206.18 736 712 183.2

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