ASTROSAT CZTI

Data Quality Report

Orbit 40015

Creation date: 2024-06-27T22:11:18.781320
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_054T03_9000005516_40015cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40015cztM0_level2_quad_clean.evt
Size (bytes)370,872,00088,876,800
Size353.7 MB 84.8 MB
Events in quadrant A3,075,867599,364
Events in quadrant B3,123,226606,867
Events in quadrant C3,017,899577,024
Events in quadrant D4,085,387525,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122772
B0130539
C0123981
D0159071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5474400.730727%
B54731562.850356%
C54741492.721958%
D54742574.694921%

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 7117 5475 37 37 0.52% 0.68%
B 7117 5475 84 84 1.18% 1.53%
C 7117 5475 132 132 1.85% 2.41%
D 7117 5475 280 280 3.93% 5.11%

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 487873 3925.66 601 587 124.1
A 13 248 206871 1661.86 601 587 124.1
A 9 143 19161 149.64 601 587 124.1
B 4 171 720994 6192.36 592 575 116.3
B 0 230 18096 150.6 592 575 116.3
B 0 218 17572 146.1 592 575 116.3
C 14 254 448072 3294.21 579 583 135.8
C 15 214 226748 1664.92 579 583 135.8
C 9 54 40651 294.96 579 583 135.8
D 12 227 911076 6373.95 580 565 142.8
D 2 250 586226 4099.87 580 565 142.8
D 13 249 157119 1095.94 580 565 142.8

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