ASTROSAT CZTI

Data Quality Report

Orbit 43998

Creation date: 2024-06-27T22:58:06.288180
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_034T03_9000005926_43998cztM0_level2.fits modeM0/AS1A13_034T03_9000005926_43998cztM0_level2_quad_clean.evt
Size (bytes)504,915,840109,537,920
Size481.5 MB 104.5 MB
Events in quadrant A6,071,301677,703
Events in quadrant B3,446,357773,734
Events in quadrant C3,752,871742,722
Events in quadrant D4,883,972642,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232242
B0148302
C0156682
D0191392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A689289212.942542%
B68932453.554330%
C68932143.104599%
D68924897.095183%

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 8807 6894 500 500 5.68% 7.25%
B 8808 6895 10 10 0.11% 0.15%
C 8808 6895 59 59 0.67% 0.86%
D 8807 6894 263 263 2.99% 3.81%

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 1742119 10932.06 766 747 159.3
A 10 83 1214357 7618.85 766 747 159.3
A 15 223 124768 778.58 766 747 159.3
B 5 172 89457 557.31 805 778 159.1
B 4 171 36628 225.3 805 778 159.1
B 4 173 28310 173.03 805 778 159.1
C 14 254 367570 1952.91 800 804 187.8
C 3 233 216641 1149.26 800 804 187.8
C 2 14 47618 249.27 800 804 187.8
D 1 52 1447666 7333.83 774 747 197.3
D 13 171 125056 630.07 774 747 197.3
D 13 249 88704 445.82 774 747 197.3

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