ASTROSAT CZTI

Data Quality Report

Orbit 43982

Creation date: 2024-06-27T22:57:56.688053
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_065T06_9000005924_43982cztM0_level2.fits modeM0/AS1A13_065T06_9000005924_43982cztM0_level2_quad_clean.evt
Size (bytes)646,326,72098,369,280
Size616.4 MB 93.8 MB
Events in quadrant A11,896,085213,427
Events in quadrant B4,116,058792,372
Events in quadrant C3,196,705789,005
Events in quadrant D4,186,250710,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400682
B0167592
C0141752
D0172142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796505074.308417%
B67963965.826957%
C6796180.264862%
D67961512.221895%

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 7931 6796 2995 2995 37.76% 44.07%
B 7931 6797 235 235 2.96% 3.46%
C 7931 6797 3 3 0.04% 0.04%
D 7931 6797 116 116 1.46% 1.71%

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 15 223 10053085 185841.14 255 250 54.1
A 10 83 464021 8573.47 255 250 54.1
A 14 238 381396 7046.02 255 250 54.1
B 5 172 850619 5489.91 784 760 154.8
B 4 171 130621 838.87 784 760 154.8
B 12 111 19387 120.33 784 760 154.8
C 14 254 60877 321.06 790 796 187.1
C 15 157 23454 121.08 790 796 187.1
C 3 233 22243 114.61 790 796 187.1
D 1 52 367881 1854.15 780 758 198.0
D 5 222 297801 1500.21 780 758 198.0
D 4 222 119595 600.18 780 758 198.0

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