ASTROSAT CZTI

Data Quality Report

Orbit 29471

Creation date: 2024-06-27T20:04:26.683360
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/AS1A10_102T09_9000004242_29471cztM0_level2.evt modeM0/AS1A10_102T09_9000004242_29471cztM0_level2_quad_clean.evt
Size (bytes)1,236,674,880115,191,360
Size1.2 GB 109.9 MB
Events in quadrant A5,668,474739,479
Events in quadrant B5,793,992758,280
Events in quadrant C6,735,616698,039
Events in quadrant D18,549,833565,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021911
B022010
C02219
D022010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023341612
B023799616
C028097703
D0653983037

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10520500.475285%
B10525890.845606%
C105195194.933929%
D10421371135.610786%

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 13539 10586 1 1 0.01% 0.01%
B 13540 10577 3 3 0.02% 0.03%
C 13540 10578 0 0 0.00% 0.00%
D 13540 10463 3540 3540 26.14% 33.83%

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 12 96 28688 94.24 1463 1436 289.2
A 13 254 19680 63.09 1463 1436 289.2
A 3 137 12943 39.79 1463 1436 289.2
B 12 111 31837 111.24 1467 1437 273.3
B 11 111 29424 102.41 1467 1437 273.3
B 14 111 26809 92.85 1467 1437 273.3
C 3 233 894151 2846.35 1359 1372 313.7
C 14 238 347526 1103.61 1359 1372 313.7
C 14 254 170668 539.75 1359 1372 313.7
D 8 195 8499738 31043.72 1161 1131 273.8
D 7 80 4613902 16849.54 1161 1131 273.8
D 1 52 614523 2240.6 1161 1131 273.8

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