ASTROSAT CZTI

Data Quality Report

Orbit 39756

Creation date: 2024-06-27T22:08:38.588102
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/AS1A12_022T01_9000005494_39756cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39756cztM0_level2_quad_clean.evt
Size (bytes)393,984,000103,921,920
Size375.7 MB 99.1 MB
Events in quadrant A3,645,207703,267
Events in quadrant B3,014,498720,447
Events in quadrant C3,146,480690,047
Events in quadrant D4,285,211590,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150742
B0133141
C0134601
D0172521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6330911.437599%
B6330290.458136%
C6330130.205371%
D63304877.693523%

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 9104 6332 32 32 0.35% 0.51%
B 9104 6332 14 14 0.15% 0.22%
C 9104 6332 4 4 0.04% 0.06%
D 9104 6331 380 380 4.17% 6.00%

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 10 83 506667 3642.87 694 681 138.9
A 6 10 298189 2141.92 694 681 138.9
A 9 143 60895 433.51 694 681 138.9
B 5 255 91820 678.98 691 671 134.2
B 0 190 60408 444.99 691 671 134.2
B 4 170 47320 347.5 691 671 134.2
C 15 214 261393 1643.56 676 678 158.6
C 15 208 212847 1337.52 676 678 158.6
C 0 10 17964 108.97 676 678 158.6
D 2 250 884582 5641.37 641 621 156.7
D 12 227 471576 3005.6 641 621 156.7
D 12 233 171795 1092.42 641 621 156.7

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