ASTROSAT CZTI

Data Quality Report

Orbit 54521

Creation date: 2025-10-26T16:08:52.577047
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_127T09_9000006520_54521cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54521cztM0_level2_quad_clean.evt
Size (bytes)496,592,64095,616,000
Size473.6 MB 91.2 MB
Events in quadrant A3,250,938653,007
Events in quadrant B5,585,811603,227
Events in quadrant C5,228,074580,361
Events in quadrant D3,773,091571,022

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147780
B0215870
C0206370
D0165230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7000440.628571%
B699999414.202029%
C69995688.115445%
D70001902.714286%

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 7000 7000 39 39 0.56% 0.56%
B 6999 6999 778 778 11.12% 11.12%
C 6999 6999 464 464 6.63% 6.63%
D 7000 7000 153 153 2.19% 2.19%

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 11 3 178446 961.03 744 725 184.9
A 4 3 70107 375.18 744 725 184.9
A 8 245 42881 227.96 744 725 184.9
B 5 185 2547138 17044.32 689 665 149.4
B 10 247 165062 1100.36 689 665 149.4
B 4 81 87314 579.97 689 665 149.4
C 4 5 1865841 9712.37 699 694 192.0
C 7 0 178107 923.84 699 694 192.0
C 1 16 91134 470.95 699 694 192.0
D 12 3 673308 3345.96 708 674 201.0
D 7 70 76039 374.9 708 674 201.0
D 3 12 70327 346.48 708 674 201.0

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