ASTROSAT CZTI

Data Quality Report

Orbit 23932

Creation date: 2024-06-27T19:00:12.748334
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/AS1A07_142T01_9000003540_23932cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23932cztM0_level2_quad_clean.evt
Size (bytes)614,928,960103,599,360
Size586.4 MB 98.8 MB
Events in quadrant A3,811,318667,051
Events in quadrant B4,135,039673,305
Events in quadrant C4,436,172629,010
Events in quadrant D5,704,206617,793

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164382
B0174462
C0181592
D0223473

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7915600.758054%
B79161742.198080%
C79163504.421425%
D79152933.701832%

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 8515 7917 1 1 0.01% 0.01%
B 8516 7918 8 8 0.09% 0.10%
C 8516 7918 125 125 1.47% 1.58%
D 8515 7917 222 222 2.61% 2.80%

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 2 250 19276 92.06 982 960 199.0
A 13 254 14828 69.7 982 960 199.0
A 3 137 8676 38.78 982 960 199.0
B 15 33 233474 1251.44 978 952 185.8
B 0 189 49213 259.74 978 952 185.8
B 12 111 22323 115.02 978 952 185.8
C 10 9 648705 2940.49 930 934 220.3
C 14 238 145313 655.39 930 934 220.3
C 0 10 16280 69.66 930 934 220.3
D 8 195 1503253 6468.7 940 911 232.2
D 12 218 382114 1641.36 940 911 232.2
D 1 52 92685 395.16 940 911 232.2

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