ASTROSAT CZTI

Data Quality Report

Orbit 50552

Creation date: 2025-02-01T09:11:56.639266
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_50552cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50552cztM0_level2_quad_clean.evt
Size (bytes)671,086,08088,966,080
Size640.0 MB 84.8 MB
Events in quadrant A5,874,748594,627
Events in quadrant B4,374,142660,604
Events in quadrant C7,860,908463,180
Events in quadrant D6,225,325519,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219341
B0176361
C0278331
D0230481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65346399.779614%
B65354476.840092%
C6535192329.426167%
D653481912.534435%

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 7674 6535 497 497 6.48% 7.61%
B 7675 6536 247 247 3.22% 3.78%
C 7675 6536 1172 1172 15.27% 17.93%
D 7674 6535 730 730 9.51% 11.17%

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 12 250 1425755 8227.43 694 676 173.2
A 8 247 534231 3080.38 694 676 173.2
A 3 14 239448 1378.51 694 676 173.2
B 12 0 559185 3826.15 694 672 146.0
B 6 51 276154 1887.22 694 672 146.0
B 7 0 226434 1546.61 694 672 146.0
C 15 178 1199616 7354.58 586 581 163.0
C 15 218 959844 5883.88 586 581 163.0
C 15 157 648000 3971.1 586 581 163.0
D 6 42 1864491 10383.14 642 620 179.5
D 2 165 295228 1641.18 642 620 179.5
D 8 48 227283 1262.68 642 620 179.5

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