ASTROSAT CZTI

Data Quality Report

Orbit 50595

Creation date: 2025-02-04T15:20:02.498331
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_50595cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50595cztM0_level2_quad_clean.evt
Size (bytes)726,050,88087,750,720
Size692.4 MB 83.7 MB
Events in quadrant A4,278,852610,611
Events in quadrant B10,680,943441,134
Events in quadrant C4,668,821616,851
Events in quadrant D6,742,399532,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171361
B0362691
C0184711
D0246631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65254086.252874%
B6526271141.541526%
C65262143.279191%
D652676111.661048%

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 7740 6526 331 331 4.28% 5.07%
B 7741 6526 2181 2181 28.17% 33.42%
C 7741 6527 202 202 2.61% 3.09%
D 7741 6527 752 752 9.71% 11.52%

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 10 251 868038 5181.56 676 661 167.4
A 8 38 116634 692.8 676 661 167.4
A 5 240 115866 688.22 676 661 167.4
B 5 172 4710692 39400.14 567 547 119.5
B 4 170 2052274 17162.6 567 547 119.5
B 5 32 799594 6683.99 567 547 119.5
C 15 232 997774 5211.96 682 676 191.3
C 15 147 219140 1141.94 682 676 191.3
C 14 247 198550 1034.31 682 676 191.3
D 8 246 2543749 14098.29 648 624 180.4
D 7 126 256234 1417.02 648 624 180.4
D 2 249 240741 1331.13 648 624 180.4

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