ASTROSAT CZTI

Data Quality Report

Orbit 38901

Creation date: 2024-06-27T21:57:56.959135
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_064T01_9000005416_38901cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38901cztM0_level2_quad_clean.evt
Size (bytes)479,041,92092,672,640
Size456.8 MB 88.4 MB
Events in quadrant A3,104,730637,852
Events in quadrant B2,622,658654,829
Events in quadrant C3,053,446632,264
Events in quadrant D8,499,791474,198

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127873
B0118512
C0126622
D0292542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5819180.309332%
B5819130.223406%
C5819410.704588%
D5819136523.457639%

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 7163 5820 13 13 0.18% 0.22%
B 7163 5820 5 5 0.07% 0.09%
C 7163 5820 47 47 0.66% 0.81%
D 7163 5820 1385 1385 19.34% 23.80%

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 451386 3479.94 637 622 129.5
A 13 248 84686 648.98 637 622 129.5
A 6 10 63445 485.0 637 622 129.5
B 15 85 28798 227.29 637 617 124.0
B 5 172 27817 219.38 637 617 124.0
B 0 230 27196 214.37 637 617 124.0
C 15 214 242524 1648.52 626 628 146.7
C 14 254 159007 1079.35 626 628 146.7
C 15 208 139216 944.48 626 628 146.7
D 12 227 2058189 14723.11 578 561 139.8
D 12 235 1470787 10520.02 578 561 139.8
D 14 52 1189422 8506.75 578 561 139.8

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