ASTROSAT CZTI

Data Quality Report

Orbit 40549

Creation date: 2024-06-27T22:17:26.508289
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/AS1A12_011T26_9000005548_40549cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40549cztM0_level2_quad_clean.evt
Size (bytes)359,130,24084,456,000
Size342.5 MB 80.5 MB
Events in quadrant A2,836,343615,860
Events in quadrant B3,151,056578,302
Events in quadrant C2,522,616584,787
Events in quadrant D4,379,542415,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01145230
B01268050
C01063251
D01670862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5180150.289575%
B51644037.804028%
C5168160.309598%
D5181147528.469407%

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 7321 5195 2 2 0.03% 0.04%
B 7321 5187 338 338 4.62% 6.52%
C 7321 5188 9 9 0.12% 0.17%
D 7321 5192 247 247 3.37% 4.76%

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 474176 3958.54 593 582 119.6
A 2 79 39112 322.05 593 582 119.6
A 3 1 17381 140.41 593 582 119.6
B 7 202 781477 7199.69 568 554 108.5
B 3 112 77036 705.12 568 554 108.5
B 4 171 33526 303.98 568 554 108.5
C 15 214 228663 1727.72 571 574 132.0
C 0 10 26232 194.35 571 574 132.0
C 14 254 25233 186.79 571 574 132.0
D 12 227 909055 7365.95 502 490 123.3
D 2 250 686005 5557.63 502 490 123.3
D 5 32 508902 4121.82 502 490 123.3

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