ASTROSAT CZTI

Data Quality Report

Orbit 40548

Creation date: 2024-06-27T22:17:25.439310
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_40548cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40548cztM0_level2_quad_clean.evt
Size (bytes)408,968,64085,628,160
Size390.0 MB 81.7 MB
Events in quadrant A2,877,724639,365
Events in quadrant B3,188,950605,728
Events in quadrant C2,593,994612,452
Events in quadrant D6,073,579372,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115053
B0126812
C0107082
D0216892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518180.154410%
B51814057.817024%
C5181130.250917%
D5181207340.011581%

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 7304 5182 2 2 0.03% 0.04%
B 7304 5182 338 338 4.63% 6.52%
C 7304 5182 12 12 0.16% 0.23%
D 7304 5181 614 614 8.41% 11.85%

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 475949 3870.86 610 601 122.8
A 12 189 26126 207.86 610 601 122.8
A 3 137 6441 47.56 610 601 122.8
B 7 202 781551 7043.12 586 571 110.9
B 3 112 46465 413.89 586 571 110.9
B 4 171 26331 232.31 586 571 110.9
C 15 214 227334 1679.55 583 590 135.0
C 0 10 47771 349.48 583 590 135.0
C 14 254 30256 219.74 583 590 135.0
D 12 227 1818068 15261.88 486 473 119.1
D 2 250 1280089 10744.61 486 473 119.1
D 5 32 753519 6323.14 486 473 119.1

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