ASTROSAT CZTI

Data Quality Report

Orbit 50581

Creation date: 2025-02-03T08:06:29.760720
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_239T01_9000006444_50581cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50581cztM0_level2_quad_clean.evt
Size (bytes)621,120,96088,352,640
Size592.3 MB 84.3 MB
Events in quadrant A4,249,486596,346
Events in quadrant B5,228,091613,397
Events in quadrant C5,919,298542,722
Events in quadrant D7,101,164478,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169731
B0200511
C0219288
D0256241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63723164.959196%
B637268110.687382%
C637180912.698164%
D6372112217.608286%

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 7507 6374 231 231 3.08% 3.62%
B 7507 6374 393 393 5.24% 6.17%
C 7506 6373 656 656 8.74% 10.29%
D 7507 6374 1123 1123 14.96% 17.62%

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 8 247 385874 2317.49 666 648 166.2
A 8 38 301907 1812.35 666 648 166.2
A 4 249 271661 1630.39 666 648 166.2
B 4 170 886153 6340.56 654 634 139.7
B 7 0 575286 4114.66 654 634 139.7
B 5 172 431514 3085.22 654 634 139.7
C 15 196 1556317 8885.29 637 631 175.1
C 15 195 764453 4362.56 637 631 175.1
C 0 177 321225 1831.07 637 631 175.1
D 8 246 2345584 13678.59 614 591 171.4
D 7 96 1204004 7019.63 614 591 171.4
D 2 249 251896 1465.89 614 591 171.4

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