ASTROSAT CZTI

Data Quality Report

Orbit 41071

Creation date: 2024-06-27T22:24:05.369960
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_095T02_9000005596_41071cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41071cztM0_level2_quad_clean.evt
Size (bytes)293,005,44078,243,840
Size279.4 MB 74.6 MB
Events in quadrant A2,718,362523,886
Events in quadrant B3,003,972529,973
Events in quadrant C2,289,555513,697
Events in quadrant D2,472,179474,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011784733
B012910741
C010248551
D011247730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01031
B01010
C01001
D01031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4621130.281324%
B46471523.270927%
C4633360.777034%
D4627440.950940%

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 7058 4865 4 4 0.06% 0.08%
B 7059 4883 105 105 1.49% 2.15%
C 7060 4875 31 31 0.44% 0.64%
D 7060 4863 38 38 0.54% 0.78%

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 461822 4371.7 512 502 105.5
A 12 189 254369 2405.77 512 502 105.5
A 13 6 9214 82.56 512 502 105.5
B 0 186 456965 4654.48 508 495 98.1
B 0 190 214191 2178.99 508 495 98.1
B 5 255 196706 2000.7 508 495 98.1
C 15 214 196818 1665.7 502 506 117.9
C 0 10 108099 912.92 502 506 117.9
C 14 254 22396 185.74 502 506 117.9
D 2 16 152905 1236.98 500 485 123.2
D 12 79 145579 1177.53 500 485 123.2
D 2 153 51860 416.94 500 485 123.2

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