ASTROSAT CZTI

Data Quality Report

Orbit 40521

Creation date: 2024-06-27T22:17:07.390414
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/AS1T05_070T01_9000005544_40521cztM0_level2.fits modeM0/AS1T05_070T01_9000005544_40521cztM0_level2_quad_clean.evt
Size (bytes)289,163,52082,644,480
Size275.8 MB 78.8 MB
Events in quadrant A2,724,390565,723
Events in quadrant B2,409,087577,066
Events in quadrant C2,416,413547,877
Events in quadrant D2,765,613462,856

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109463
B0103472
C0101982
D0115432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971130.261517%
B4971140.281633%
C4971110.221283%
D49714979.997988%

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 6944 4972 2 2 0.03% 0.04%
B 6944 4972 2 2 0.03% 0.04%
C 6944 4972 5 5 0.07% 0.10%
D 6944 4972 76 76 1.09% 1.53%

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 498804 4340.86 556 545 114.8
A 2 79 35368 303.38 556 545 114.8
A 7 3 18357 155.18 556 545 114.8
B 3 112 86940 797.65 550 535 108.3
B 4 171 69188 633.77 550 535 108.3
B 5 32 37235 338.8 550 535 108.3
C 15 214 221867 1731.86 540 543 127.8
C 14 254 60648 470.32 540 543 127.8
C 10 20 9755 72.08 540 543 127.8
D 2 250 328748 2519.64 514 498 130.3
D 12 191 145530 1113.26 514 498 130.3
D 5 32 108129 826.17 514 498 130.3

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