ASTROSAT CZTI

Data Quality Report

Orbit 53150

Creation date: 2025-07-28T09:38:33.072411
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/AS1C09_011T07_9000006488_53150cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53150cztM0_level2_quad_clean.evt
Size (bytes)550,823,04095,376,960
Size525.3 MB 91.0 MB
Events in quadrant A4,021,635628,473
Events in quadrant B3,283,765713,396
Events in quadrant C7,113,427528,650
Events in quadrant D5,450,609550,961

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170372
B0148592
C0257408
D0210862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66973825.704047%
B6698841.254106%
C6697126818.933851%
D66976199.242945%

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 9107 6699 330 330 3.62% 4.93%
B 9108 6700 31 31 0.34% 0.46%
C 9107 6699 1181 1181 12.97% 17.63%
D 9107 6699 552 552 6.06% 8.24%

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 12 115 857471 5115.94 673 657 167.5
A 15 174 128599 763.93 673 657 167.5
A 3 62 121157 719.49 673 657 167.5
B 4 81 202574 1388.32 695 673 145.4
B 10 247 63202 429.97 695 673 145.4
B 2 249 52020 353.08 695 673 145.4
C 1 241 2792814 16355.31 617 613 170.7
C 15 224 1090101 6381.67 617 613 170.7
C 13 3 346789 2027.72 617 613 170.7
D 10 172 1401581 7578.51 636 608 184.9
D 15 125 430487 2325.41 636 608 184.9
D 3 12 301793 1629.25 636 608 184.9

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