ASTROSAT CZTI

Data Quality Report

Orbit 50959

Creation date: 2025-03-20T08:44:40.121280
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/AS1C07_001T02_9000006452_50959cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50959cztM0_level2_quad_clean.evt
Size (bytes)700,583,04082,728,000
Size668.1 MB 78.9 MB
Events in quadrant A9,323,416417,081
Events in quadrant B5,240,917616,136
Events in quadrant C3,778,781556,695
Events in quadrant D7,105,866477,929

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320021
B0198751
C0154669
D0254671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254232237.128238%
B62556109.752198%
C62542313.693636%
D625497315.558043%

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 7290 6256 1793 1793 24.60% 28.66%
B 7291 6257 344 344 4.72% 5.50%
C 7290 6256 110 110 1.51% 1.76%
D 7290 6256 808 808 11.08% 12.92%

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 14 254 2255177 15439.87 581 564 146.0
A 12 80 2223510 15223.01 581 564 146.0
A 8 43 1777480 12168.54 581 564 146.0
B 5 236 1717133 12668.63 644 621 135.5
B 4 171 284027 2091.66 644 621 135.5
B 0 171 149771 1100.79 644 621 135.5
C 0 193 439011 2442.65 643 635 179.5
C 12 247 141526 785.05 643 635 179.5
C 0 177 104355 577.93 643 635 179.5
D 8 176 1488396 8762.82 610 588 169.8
D 2 62 1465589 8628.5 610 588 169.8
D 10 172 537484 3162.19 610 588 169.8

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