ASTROSAT CZTI

Data Quality Report

Orbit 37154

Creation date: 2024-06-27T21:36:17.029779
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/AS1A11_079T01_9000005284_37154cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37154cztM0_level2_quad_clean.evt
Size (bytes)406,399,68051,739,200
Size387.6 MB 49.3 MB
Events in quadrant A2,680,124306,286
Events in quadrant B2,739,421306,889
Events in quadrant C2,745,934302,023
Events in quadrant D3,778,519276,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111813
B0115872
C0112032
D0148862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534580.149673%
B5345530.991581%
C5345140.261927%
D53453456.454630%

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 7018 5346 4 4 0.06% 0.07%
B 7018 5346 32 32 0.46% 0.60%
C 7018 5346 5 5 0.07% 0.09%
D 7018 5346 296 296 4.22% 5.54%

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 256250 2015.4 621 609 126.8
A 9 143 9662 71.37 621 609 126.8
A 13 6 8840 64.89 621 609 126.8
B 5 172 193393 1622.29 616 601 118.8
B 5 255 69360 578.59 616 601 118.8
B 5 207 34085 281.76 616 601 118.8
C 15 214 250153 1756.8 602 606 142.0
C 0 10 77065 538.27 602 606 142.0
C 14 254 50558 351.66 602 606 142.0
D 2 249 979936 6810.88 586 570 143.8
D 12 227 109699 758.92 586 570 143.8
D 13 249 83784 578.7 586 570 143.8

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