ASTROSAT CZTI

Data Quality Report

Orbit 41860

Creation date: 2024-06-27T22:33:44.195692
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/AS1C07_001T11_9000005710_41860cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41860cztM0_level2_quad_clean.evt
Size (bytes)409,040,64088,548,480
Size390.1 MB 84.4 MB
Events in quadrant A4,889,039571,869
Events in quadrant B2,461,799614,108
Events in quadrant C3,271,169579,657
Events in quadrant D4,076,987517,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184632
B0116232
C0134832
D0163772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56844377.688248%
B5684180.316678%
C56842574.521464%
D56844728.304011%

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 7236 5685 275 275 3.80% 4.84%
B 7236 5685 7 7 0.10% 0.12%
C 7236 5685 255 255 3.52% 4.49%
D 7236 5685 470 470 6.50% 8.27%

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 24 2054801 17113.24 584 571 120.0
A 10 83 550502 4581.33 584 571 120.0
A 2 79 19648 158.93 584 571 120.0
B 5 255 34206 291.13 595 578 115.5
B 0 245 33901 288.49 595 578 115.5
B 12 111 14696 122.23 595 578 115.5
C 0 10 781394 5925.42 569 571 131.8
C 15 214 223925 1694.96 569 571 131.8
C 15 111 45122 338.08 569 571 131.8
D 12 79 1194602 8489.89 568 551 140.6
D 13 249 330675 2347.23 568 551 140.6
D 2 249 102712 726.38 568 551 140.6

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