ASTROSAT CZTI

Data Quality Report

Orbit 18899

Creation date: 2024-06-27T17:56:17.093088
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_163T01_9000002820_18899cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18899cztM0_level2_quad_clean.evt
Size (bytes)380,767,68065,390,400
Size363.1 MB 62.4 MB
Events in quadrant A2,380,933415,314
Events in quadrant B3,339,762422,612
Events in quadrant C2,341,708413,588
Events in quadrant D3,135,228384,199

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103091
B0132161
C0101721
D0127381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4904280.570962%
B49042555.199837%
C4904410.836052%
D49042615.322186%

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 5989 4905 12 12 0.20% 0.24%
B 5989 4905 137 137 2.29% 2.79%
C 5989 4905 0 0 0.00% 0.00%
D 5989 4905 177 177 2.96% 3.61%

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 14 235 84401 696.2 594 583 120.4
A 13 254 7078 53.95 594 583 120.4
A 9 143 6496 49.11 594 583 120.4
B 3 112 929809 8249.59 588 574 112.6
B 4 216 43803 383.78 588 574 112.6
B 0 189 39213 343.03 588 574 112.6
C 14 238 88275 658.96 573 577 133.1
C 3 233 20459 149.39 573 577 133.1
C 13 61 4093 26.42 573 577 133.1
D 1 52 672294 4887.35 565 549 137.4
D 7 238 207662 1506.87 565 549 137.4
D 12 110 52292 376.46 565 549 137.4

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