ASTROSAT CZTI

Data Quality Report

Orbit 51513

Creation date: 2025-04-07T03:48:13.160017
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_090T01_9000006458_51513cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51513cztM0_level2_quad_clean.evt
Size (bytes)663,549,12099,115,200
Size632.8 MB 94.5 MB
Events in quadrant A5,451,117680,504
Events in quadrant B4,222,226741,955
Events in quadrant C4,684,307650,439
Events in quadrant D9,638,110419,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211271
B0174021
C0190441
D0337481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73052753.764545%
B73061672.285792%
C73062403.284971%
D7306251234.382699%

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 7460 7307 155 155 2.08% 2.12%
B 7461 7308 20 20 0.27% 0.27%
C 7461 7308 172 172 2.31% 2.35%
D 7460 7306 2201 2201 29.50% 30.13%

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 12 250 668950 3404.62 790 768 196.3
A 12 3 658694 3352.37 790 768 196.3
A 15 174 240001 1218.98 790 768 196.3
B 15 52 388184 2287.17 790 762 169.4
B 8 128 100965 591.55 790 762 169.4
B 5 172 91172 533.74 790 762 169.4
C 15 1 606718 2865.97 767 760 211.4
C 13 3 414069 1954.8 767 760 211.4
C 12 252 132110 621.24 767 760 211.4
D 8 176 5735511 34567.46 594 573 165.9
D 6 228 595634 3586.74 594 573 165.9
D 11 176 363366 2186.74 594 573 165.9

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