ASTROSAT CZTI

Data Quality Report

Orbit 12503

Creation date: 2024-06-27T16:28:18.808600
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/AS1A04_174T01_9000001850_12503cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12503cztM0_level2_quad_clean.evt
Size (bytes)452,496,96084,211,200
Size431.5 MB 80.3 MB
Events in quadrant A3,420,752543,679
Events in quadrant B3,931,780548,632
Events in quadrant C2,789,062542,240
Events in quadrant D3,169,740511,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140572
B0154931
C0120531
D0132941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5781951.643314%
B57812233.857464%
C5781480.830306%
D5781691.193565%

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 6977 5782 9 9 0.13% 0.16%
B 6977 5783 69 69 0.99% 1.19%
C 6977 5783 5 5 0.07% 0.09%
D 6977 5783 22 22 0.32% 0.38%

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 1 162 206102 1411.89 715 704 145.5
A 1 178 124043 847.82 715 704 145.5
A 1 161 105602 721.06 715 704 145.5
B 4 239 696741 5158.82 712 698 134.9
B 3 64 396739 2935.31 712 698 134.9
B 11 51 17525 124.72 712 698 134.9
C 7 238 37917 229.39 698 704 162.2
C 14 234 18093 107.19 698 704 162.2
C 14 67 6965 38.59 698 704 162.2
D 13 104 185382 1100.69 694 676 167.8
D 7 80 141908 841.62 694 676 167.8
D 1 52 115663 685.22 694 676 167.8

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