ASTROSAT CZTI

Data Quality Report

Orbit 55653

Creation date: 2026-01-13T16:29:52.463716
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_55653cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55653cztM0_level2_quad_clean.evt
Size (bytes)730,229,76099,904,320
Size696.4 MB 95.3 MB
Events in quadrant A7,292,559649,496
Events in quadrant B3,334,752772,154
Events in quadrant C3,499,134674,617
Events in quadrant D12,306,095391,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270161
B0160391
C0167611
D0418941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A771086711.245136%
B7711841.089353%
C77111151.491376%
D7711333243.210997%

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 7725 7711 626 626 8.10% 8.12%
B 7726 7712 8 8 0.10% 0.10%
C 7726 7712 65 65 0.84% 0.84%
D 7726 7712 2958 2958 38.29% 38.36%

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 1867595 9826.05 773 750 190.0
A 3 14 999944 5259.21 773 750 190.0
A 15 32 410812 2158.34 773 750 190.0
B 7 252 80451 462.55 797 767 172.3
B 0 171 26254 147.95 797 767 172.3
B 12 111 20685 115.62 797 767 172.3
C 13 3 186388 881.96 780 775 210.5
C 12 250 90810 427.81 780 775 210.5
C 10 19 86875 409.12 780 775 210.5
D 7 70 8787039 48553.76 637 605 181.0
D 8 245 536810 2963.06 637 605 181.0
D 11 129 127273 699.97 637 605 181.0

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