ASTROSAT CZTI

Data Quality Report

Orbit 47272

Creation date: 2024-06-27T23:33:35.611061
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_025T01_9000006312_47272cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47272cztM0_level2_quad_clean.evt
Size (bytes)512,213,760106,439,040
Size488.5 MB 101.5 MB
Events in quadrant A7,436,536671,551
Events in quadrant B3,372,164767,025
Events in quadrant C3,325,078715,738
Events in quadrant D4,339,756630,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142
B0152
C0152
D0152

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027150765
B014386169
C014390150
D017660186

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01302
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62226199.948570%
B6296881.397713%
C62971602.540892%
D62883655.804707%

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 7596 6352 286 286 3.77% 4.50%
B 7596 6358 15 15 0.20% 0.24%
C 7596 6359 110 110 1.45% 1.73%
D 7596 6358 277 277 3.65% 4.36%

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 3460917 23645.57 705 691 146.3
A 9 191 1195475 8164.59 705 691 146.3
A 13 6 17988 118.2 705 691 146.3
B 0 200 146556 998.46 746 725 146.1
B 0 190 102003 693.42 746 725 146.1
B 5 32 66982 453.64 746 725 146.1
C 14 254 444731 2588.01 728 732 171.6
C 3 233 18240 102.05 728 732 171.6
C 12 250 10106 54.64 728 732 171.6
D 6 112 856794 4785.17 705 684 178.9
D 12 233 408259 2278.11 705 684 178.9
D 2 249 105881 587.99 705 684 178.9

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