ASTROSAT CZTI

Data Quality Report

Orbit 52154

Creation date: 2025-05-20T11:24:16.873152
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_9000006470_52154cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52154cztM0_level2_quad_clean.evt
Size (bytes)1,200,214,08088,701,120
Size1.1 GB 84.6 MB
Events in quadrant A6,155,794733,129
Events in quadrant B10,870,209560,582
Events in quadrant C9,099,576622,024
Events in quadrant D17,684,163211,677

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239660
B0378295
C0326890
D05812123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80191521.895498%
B8019295336.825041%
C8019147218.356404%
D8016586173.116267%

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 8019 8019 145 145 1.81% 1.81%
B 8018 8018 2216 2216 27.64% 27.64%
C 8019 8019 1291 1291 16.10% 16.10%
D 8019 8017 5795 5795 72.27% 72.28%

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 4 3 1363565 6470.85 832 809 210.6
A 14 254 328439 1555.7 832 809 210.6
A 3 95 189278 894.92 832 809 210.6
B 12 32 6387151 44155.09 689 668 144.6
B 10 254 890643 6153.14 689 668 144.6
B 4 171 112419 772.63 689 668 144.6
C 15 224 2682411 12586.38 771 765 213.1
C 4 5 896369 4203.54 771 765 213.1
C 15 192 682485 3199.67 771 765 213.1
D 6 42 10958215 74818.43 507 484 146.5
D 12 3 2565192 17511.6 507 484 146.5
D 12 17 697660 4760.26 507 484 146.5

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