ASTROSAT CZTI

Data Quality Report

Orbit 45838

Creation date: 2024-06-27T23:16:45.012707
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/AS1T05_186T01_9000006130_45838cztM0_level2.fits modeM0/AS1T05_186T01_9000006130_45838cztM0_level2_quad_clean.evt
Size (bytes)685,866,240100,356,480
Size654.1 MB 95.7 MB
Events in quadrant A5,825,027710,778
Events in quadrant B8,383,959592,670
Events in quadrant C3,039,364729,559
Events in quadrant D7,643,718557,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210491
B0295481
C0133561
D0270671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64173014.690665%
B6417177127.598566%
C64181141.776254%
D6417128219.978183%

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 7422 6418 7 7 0.09% 0.11%
B 7422 6417 1109 1109 14.94% 17.28%
C 7423 6419 4 4 0.05% 0.06%
D 7422 6418 1065 1065 14.35% 16.59%

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 2762055 17269.42 768 750 159.9
A 14 235 34209 209.26 768 750 159.9
A 9 191 25501 154.79 768 750 159.9
B 3 112 4613539 32609.08 709 688 141.5
B 12 18 512357 3617.08 709 688 141.5
B 0 189 119896 842.7 709 688 141.5
C 3 233 26668 142.87 763 767 181.3
C 5 128 19863 105.33 763 767 181.3
C 2 14 15859 83.24 763 767 181.3
D 12 2 1630153 9084.79 707 683 179.4
D 11 241 1446851 8062.83 707 683 179.4
D 13 249 516676 2876.82 707 683 179.4

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