ASTROSAT CZTI

Data Quality Report

Orbit 45142

Creation date: 2024-06-27T23:09:54.384659
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_017T02_9000006046_45142cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45142cztM0_level2_quad_clean.evt
Size (bytes)552,660,480107,242,560
Size527.1 MB 102.3 MB
Events in quadrant A6,008,326729,412
Events in quadrant B3,337,092766,085
Events in quadrant C3,901,062708,833
Events in quadrant D6,706,374588,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223951
B0140392
C0159761
D0243471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65092744.209556%
B65081482.274124%
C65083625.562385%
D6508106616.379840%

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 7564 6509 72 72 0.95% 1.11%
B 7563 6509 36 36 0.48% 0.55%
C 7563 6509 297 297 3.93% 4.56%
D 7563 6508 854 854 11.29% 13.12%

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 2422633 15290.24 766 752 158.4
A 15 223 591622 3730.38 766 752 158.4
A 10 248 15715 94.47 766 752 158.4
B 5 32 115253 752.96 767 746 152.1
B 4 170 103107 673.1 767 746 152.1
B 5 185 21637 137.37 767 746 152.1
C 12 2 910822 5264.86 736 740 172.9
C 14 254 56103 320.28 736 740 172.9
C 6 247 27455 154.55 736 740 172.9
D 13 249 2143307 11745.33 714 692 182.4
D 13 29 555304 3040.26 714 692 182.4
D 1 52 353343 1933.15 714 692 182.4

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