ASTROSAT CZTI

Data Quality Report

Orbit 45027

Creation date: 2024-06-27T23:09:09.431099
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_020T01_9000006040_45027cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45027cztM0_level2_quad_clean.evt
Size (bytes)576,480,960114,477,120
Size549.8 MB 109.2 MB
Events in quadrant A6,008,126764,144
Events in quadrant B4,231,838789,541
Events in quadrant C3,269,064779,953
Events in quadrant D7,290,427647,429

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225932
B0171832
C0146183
D0264872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69712783.987950%
B69722894.145152%
C6971841.204992%
D697186512.408550%

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 6972 4 4 0.05% 0.06%
B 7932 6973 70 70 0.88% 1.00%
C 7931 6972 5 5 0.06% 0.07%
D 7931 6972 562 562 7.09% 8.06%

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 2747289 16020.13 824 806 171.4
A 0 243 36756 209.69 824 806 171.4
A 13 248 22132 124.39 824 806 171.4
B 4 171 332554 2058.06 821 796 161.2
B 5 255 179551 1108.91 821 796 161.2
B 0 155 136150 839.67 821 796 161.2
C 15 208 32281 164.3 815 820 191.5
C 1 3 26106 132.05 815 820 191.5
C 2 14 19302 96.52 815 820 191.5
D 13 174 1301532 6568.24 790 768 198.0
D 1 52 1288761 6503.75 790 768 198.0
D 13 249 266116 1339.88 790 768 198.0

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