ASTROSAT CZTI

Data Quality Report

Orbit 53596

Creation date: 2025-08-25T11:37:00.481097
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_004T05_9000006502_53596cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53596cztM0_level2_quad_clean.evt
Size (bytes)1,447,937,28096,707,520
Size1.3 GB 92.2 MB
Events in quadrant A17,947,358397,553
Events in quadrant B8,586,390812,842
Events in quadrant C14,989,747462,486
Events in quadrant D11,349,444602,095

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0597002
B0320122
C0509572
D0402653

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9407558759.391942%
B9408153316.294643%
C9408472950.265731%
D9407250526.629106%

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 10918 9408 4771 4771 43.70% 50.71%
B 10919 9410 1208 1208 11.06% 12.84%
C 10919 9410 3452 3452 31.61% 36.68%
D 10918 9408 2075 2075 19.01% 22.06%

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 3 62 10728537 55609.18 776 755 192.9
A 12 115 3320391 17207.87 776 755 192.9
A 15 174 306350 1584.1 776 755 192.9
B 4 81 2437972 11816.46 960 927 206.2
B 10 28 482640 2335.67 960 927 206.2
B 2 249 381829 1846.87 960 927 206.2
C 15 224 5133949 27023.85 694 688 190.0
C 1 241 3891764 20484.42 694 688 190.0
C 15 164 2054101 10810.11 694 688 190.0
D 8 176 4795937 19078.85 868 830 251.3
D 10 172 961784 3823.46 868 830 251.3
D 15 43 506552 2012.17 868 830 251.3

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