ASTROSAT CZTI

Data Quality Report

Orbit 46474

Creation date: 2024-06-27T23:23:35.074434
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_203T01_9000006214_46474cztM0_level2.fits modeM0/AS1T05_203T01_9000006214_46474cztM0_level2_quad_clean.evt
Size (bytes)470,920,320113,904,000
Size449.1 MB 108.6 MB
Events in quadrant A6,365,366759,895
Events in quadrant B3,173,094814,420
Events in quadrant C3,083,742763,180
Events in quadrant D4,314,174666,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229842
B0134342
C0133232
D0170402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63852584.040720%
B6385751.174628%
C6385510.798747%
D63853325.199687%

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 7620 6386 66 66 0.87% 1.03%
B 7620 6386 7 7 0.09% 0.11%
C 7620 6386 3 3 0.04% 0.05%
D 7620 6386 251 251 3.29% 3.93%

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 3151594 19847.03 767 752 158.8
A 2 79 159862 1002.23 767 752 158.8
A 7 3 31857 195.93 767 752 158.8
B 5 29 35631 230.36 778 755 151.4
B 12 111 19119 121.3 778 755 151.4
B 11 111 17524 110.76 778 755 151.4
C 12 2 45070 247.12 768 773 179.3
C 3 233 27652 149.95 768 773 179.3
C 14 254 9798 50.35 768 773 179.3
D 2 249 576261 3098.85 746 725 185.7
D 1 52 374586 2012.97 746 725 185.7
D 13 249 299711 1609.82 746 725 185.7

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