ASTROSAT CZTI

Data Quality Report

Orbit 31449

Creation date: 2024-06-27T20:28:39.037390
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/AS1T04_029T01_9000004582_31449cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31449cztM0_level2_quad_clean.evt
Size (bytes)547,632,00092,903,040
Size522.3 MB 88.6 MB
Events in quadrant A3,212,486601,317
Events in quadrant B5,247,420601,382
Events in quadrant C3,578,744576,156
Events in quadrant D4,089,869564,994

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139472
B0203962
C0149703
D0166872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6740610.905045%
B67401171.735905%
C67392393.546520%
D67391362.018104%

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 7645 6740 0 0 0.00% 0.00%
B 7645 6740 3 3 0.04% 0.04%
C 7644 6739 32 32 0.42% 0.47%
D 7644 6739 65 65 0.85% 0.96%

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 13 254 12156 67.36 832 815 168.4
A 3 137 8662 46.6 832 815 168.4
A 0 226 6962 36.51 832 815 168.4
B 6 159 1942095 12117.99 821 800 160.2
B 4 80 44482 272.67 821 800 160.2
B 12 111 19915 119.32 821 800 160.2
C 0 10 169517 895.32 795 801 188.4
C 14 238 141908 748.81 795 801 188.4
C 10 22 73810 387.44 795 801 188.4
D 8 195 646579 3344.95 807 786 193.1
D 12 233 144757 745.71 807 786 193.1
D 5 233 116103 597.3 807 786 193.1

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