ASTROSAT CZTI

Data Quality Report

Orbit 51484

Creation date: 2025-04-05T04:40:55.654251
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/AS1A13_090T01_9000006458_51484cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51484cztM0_level2_quad_clean.evt
Size (bytes)742,138,56098,478,720
Size707.8 MB 93.9 MB
Events in quadrant A6,395,320657,429
Events in quadrant B4,016,563745,007
Events in quadrant C3,968,523670,961
Events in quadrant D12,514,635390,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241951
B0171781
C0173331
D0423119

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74426128.223596%
B74432643.546957%
C74431612.163106%
D7442305741.077667%

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 7553 7445 256 256 3.39% 3.44%
B 7554 7446 73 73 0.97% 0.98%
C 7554 7446 105 105 1.39% 1.41%
D 7552 7443 2937 2937 38.89% 39.46%

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 12 3 1637455 8505.35 786 766 192.4
A 12 250 405958 2105.65 786 766 192.4
A 8 43 348883 1809.05 786 766 192.4
B 8 234 146101 839.1 803 773 173.2
B 7 252 133239 764.84 803 773 173.2
B 0 171 94959 543.82 803 773 173.2
C 13 3 533600 2486.38 788 778 214.3
C 14 254 76862 355.04 788 778 214.3
C 12 252 54310 249.8 788 778 214.3
D 8 176 7283511 43207.49 603 580 168.6
D 3 12 2087975 12383.9 603 580 168.6
D 11 176 341029 2019.78 603 580 168.6

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