ASTROSAT CZTI

Data Quality Report

Orbit 15430

Creation date: 2024-06-27T17:08:25.483547
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/AS1T02_080T01_9000002276_15430cztM0_level2.evt modeM0/AS1T02_080T01_9000002276_15430cztM0_level2_quad_clean.evt
Size (bytes)541,607,040116,746,560
Size516.5 MB 111.3 MB
Events in quadrant A3,826,227775,013
Events in quadrant B3,639,321789,434
Events in quadrant C4,493,641767,169
Events in quadrant D3,989,157737,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157050
B0150720
C0181730
D0164230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66992543.791611%
B67002413.597015%
C67002333.477612%
D67002383.552239%

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 9254 6699 20 20 0.22% 0.30%
B 9255 6700 6 6 0.06% 0.09%
C 9255 6700 8 8 0.09% 0.12%
D 9255 6700 34 34 0.37% 0.51%

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 14 238 253589 1411.8 901 884 179.0
A 14 237 87576 484.33 901 884 179.0
A 9 143 19506 104.04 901 884 179.0
B 0 189 30209 174.77 895 874 167.8
B 15 201 21611 123.55 895 874 167.8
B 12 111 18513 105.09 895 874 167.8
C 3 233 1107349 5693.96 859 863 194.3
C 7 247 21378 105.57 859 863 194.3
C 14 234 17425 85.23 859 863 194.3
D 5 222 377812 1799.28 868 844 209.5
D 2 33 96298 455.61 868 844 209.5
D 2 152 91081 430.7 868 844 209.5

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