ASTROSAT CZTI

Data Quality Report

Orbit 55605

Creation date: 2026-01-07T19:33:11.392409
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/AS1A14_021T06_9000006538_55605cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55605cztM0_level2_quad_clean.evt
Size (bytes)498,723,84085,714,560
Size475.6 MB 81.7 MB
Events in quadrant A8,315,344467,350
Events in quadrant B2,612,088634,902
Events in quadrant C2,899,711552,627
Events in quadrant D4,158,217512,912

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290242
B0125041
C0133811
D0167361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6123150424.563123%
B6123550.898252%
C6124881.436969%
D61242103.429131%

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 7228 6124 1480 1480 20.48% 24.17%
B 7228 6124 4 4 0.06% 0.07%
C 7229 6125 50 50 0.69% 0.82%
D 7229 6125 222 222 3.07% 3.62%

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 12 115 5583549 38333.44 587 572 145.6
A 3 14 208697 1429.01 587 572 145.6
A 8 249 94314 643.64 587 572 145.6
B 5 248 48702 359.48 628 605 133.8
B 10 247 29455 215.63 628 605 133.8
B 12 111 15926 114.51 628 605 133.8
C 15 178 124699 741.66 609 601 167.3
C 10 19 114180 678.79 609 601 167.3
C 13 3 92653 550.14 609 601 167.3
D 8 160 852333 4975.34 606 578 171.2
D 2 62 386836 2256.24 606 578 171.2
D 11 129 317175 1849.33 606 578 171.2

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