ASTROSAT CZTI

Data Quality Report

Orbit 48198

Creation date: 2024-08-27T12:15:01.385132
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_037T05_9000006414_48198cztM0_level2.fits modeM0/AS1A13_037T05_9000006414_48198cztM0_level2_quad_clean.evt
Size (bytes)459,771,84078,958,080
Size438.5 MB 75.3 MB
Events in quadrant A6,437,874690,329
Events in quadrant B1,052,48541,489
Events in quadrant C2,771,723676,439
Events in quadrant D6,283,643558,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241911
B064651
C0124981
D0228171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60092664.426693%
B60106010100.000000%
C6010671.114809%
D6009119419.870195%

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 7104 6009 33 33 0.46% 0.55%
B 7104 6009 3 3 0.04% 0.05%
C 7104 6010 9 9 0.13% 0.15%
D 7104 6009 933 933 13.13% 15.53%

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 3703428 26043.45 688 676 142.2
A 10 255 59448 413.38 688 676 142.2
A 13 254 12240 81.34 688 676 142.2
B 2 177 829802 79180.32 42 42 10.5
B 0 200 26965 2569.14 42 42 10.5
B 4 21 20712 1972.45 42 42 10.5
C 12 2 77471 482.29 674 678 159.2
C 3 233 27898 170.95 674 678 159.2
C 11 16 17219 103.88 674 678 159.2
D 2 165 3113535 19811.54 616 595 157.1
D 6 239 210340 1334.87 616 595 157.1
D 12 128 182747 1159.26 616 595 157.1

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