ASTROSAT CZTI

Data Quality Report

Orbit 05455

Creation date: 2024-06-27T14:55:22.870639
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/AS1G05_204T01_9000000688_05455cztM0_level2.evt modeM0/AS1G05_204T01_9000000688_05455cztM0_level2_quad_clean.evt
Size (bytes)443,119,68099,149,760
Size422.6 MB 94.6 MB
Events in quadrant A2,697,544661,614
Events in quadrant B3,349,281659,727
Events in quadrant C2,788,014661,866
Events in quadrant D4,189,350612,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120912
B0138651
C0122511
D0164051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5825601.030043%
B5825711.218884%
C5825460.789700%
D58254387.519313%

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 7080 5826 6 6 0.08% 0.10%
B 7080 5826 8 8 0.11% 0.14%
C 7080 5826 2 2 0.03% 0.03%
D 7080 5826 357 357 5.04% 6.13%

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 0 50 37576 266.38 685 670 138.5
A 0 247 10766 72.87 685 670 138.5
A 0 226 7648 50.37 685 670 138.5
B 15 204 524291 4008.92 692 675 130.6
B 0 219 42360 319.15 692 675 130.6
B 4 48 38966 293.16 692 675 130.6
C 9 247 145138 943.05 674 677 153.2
C 14 67 5905 34.13 674 677 153.2
C 13 61 5517 31.59 674 677 153.2
D 2 33 1305398 8219.27 656 637 158.7
D 2 63 135350 848.62 656 637 158.7
D 8 195 100506 629.12 656 637 158.7

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