ASTROSAT CZTI

Data Quality Report

Orbit 20240515_A13_092T18_9000006248_level2

Creation date: 2024-05-18T11:30:28.149906
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_092T18_9000006248cztM0_level2.fits modeM0/AS1A13_092T18_9000006248cztM0_level2_quad_clean.evt
Size (bytes)400,155,840430,758,720
Size381.6 MB 410.8 MB
Events in quadrant A2,311,0882,565,869
Events in quadrant B2,247,5982,599,991
Events in quadrant C2,366,7902,545,942
Events in quadrant D1,932,3102,075,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09620
B09620
C09620
D09620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01653670
B01208310
C0987830
D01556470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4745618083.809845%
B4745618643.927849%
C474563520.741740%
D4745745309.545483%

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 51821 47454 0 0 0.00% 0.00%
B 51821 47454 0 0 0.00% 0.00%
C 51821 47456 0 0 0.00% 0.00%
D 51822 47290 0 0 0.00% 0.00%

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 7 110 1868 8.2 603 561 159.3
A 0 29 1796 7.75 603 561 159.3
A 14 95 1736 7.37 603 561 159.3
B 2 9 2182 13.56 595 565 119.3
B 2 8 1748 9.92 595 565 119.3
B 3 17 1634 8.96 595 565 119.3
C 1 81 1831 7.53 626 579 166.4
C 3 202 1771 7.16 626 579 166.4
C 1 80 1766 7.13 626 579 166.4
D 7 3 1408 5.88 554 502 154.1
D 3 31 1391 5.77 554 502 154.1
D 10 189 1387 5.74 554 502 154.1

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