ASTROSAT CZTI

Data Quality Report

Orbit 51573

Creation date: 2025-04-11T05:13:42.615000
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/AS1A13_037T05_9000006460_51573cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51573cztM0_level2_quad_clean.evt
Size (bytes)873,552,96095,616,000
Size833.1 MB 91.2 MB
Events in quadrant A11,993,596461,509
Events in quadrant B4,063,425765,447
Events in quadrant C8,793,502568,342
Events in quadrant D6,904,774576,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0408980
B0173060
C0313320
D0256420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7515300339.960080%
B75161041.383715%
C7516145019.292177%
D751680910.763704%

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 7515 7515 2362 2362 31.43% 31.43%
B 7516 7516 52 52 0.69% 0.69%
C 7516 7516 1382 1382 18.39% 18.39%
D 7516 7516 836 836 11.12% 11.12%

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 7 64 3420762 20747.52 670 654 164.8
A 12 250 2454683 14886.96 670 654 164.8
A 12 3 2147868 13025.72 670 654 164.8
B 0 171 182265 1061.4 795 767 171.0
B 10 44 132295 769.17 795 767 171.0
B 4 174 112201 651.66 795 767 171.0
C 15 198 4923780 24158.03 731 726 203.8
C 13 3 383420 1877.93 731 726 203.8
C 0 177 192581 941.46 731 726 203.8
D 8 176 1327787 6414.88 737 709 206.9
D 12 6 1055263 5097.54 737 709 206.9
D 7 126 452493 2183.85 737 709 206.9

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