ASTROSAT CZTI

Data Quality Report

Orbit 24506

Creation date: 2024-06-27T19:06:41.639848
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/AS1T03_183T01_9000003606_24506cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24506cztM0_level2_quad_clean.evt
Size (bytes)533,666,880123,531,840
Size508.9 MB 117.8 MB
Events in quadrant A3,955,936844,908
Events in quadrant B3,883,208870,741
Events in quadrant C3,288,256812,655
Events in quadrant D4,612,338778,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157513
B0156562
C0136682
D0179672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62263145.043367%
B62262894.641825%
C62261031.654353%
D62262433.902987%

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 7551 6227 176 176 2.33% 2.83%
B 7551 6227 145 145 1.92% 2.33%
C 7551 6227 28 28 0.37% 0.45%
D 7550 6226 153 153 2.03% 2.46%

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 14 111 882524 5567.94 797 786 158.4
A 13 254 9862 57.31 797 786 158.4
A 0 226 6764 37.75 797 786 158.4
B 3 64 742644 5034.75 803 787 147.3
B 12 111 16981 109.9 803 787 147.3
B 11 111 14665 94.19 803 787 147.3
C 2 16 183636 1043.22 763 768 175.3
C 14 238 125354 710.73 763 768 175.3
C 13 61 5446 26.69 763 768 175.3
D 1 52 1010483 5498.22 757 733 183.7
D 8 195 549486 2988.03 757 733 183.7
D 9 1 141097 764.3 757 733 183.7

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