ASTROSAT CZTI

Data Quality Report

Orbit 01178

Creation date: 2024-06-27T14:08:43.556218
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/AS1P01_997T02_9000000218_01178cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01178cztM0_level2_quad_clean.evt
Size (bytes)1,130,860,800105,022,080
Size1.1 GB 100.2 MB
Events in quadrant A8,327,675688,269
Events in quadrant B8,810,345684,578
Events in quadrant C8,475,379661,172
Events in quadrant D8,166,079654,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297702
B0311871
C0302351
D0292801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7080110.155367%
B7080280.395480%
C7080230.324859%
D7080490.692090%

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 7390 7081 191 191 2.58% 2.70%
B 7390 7082 261 261 3.53% 3.69%
C 7390 7081 197 197 2.67% 2.78%
D 7390 7081 285 285 3.86% 4.02%

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 12 243 10149 15.3 2163 2177 521.0
A 13 9 9912 14.84 2163 2177 521.0
A 11 79 8608 12.34 2163 2177 521.0
B 6 53 59500 107.49 2254 2262 532.5
B 4 185 47225 84.44 2254 2262 532.5
B 0 190 27483 47.37 2254 2262 532.5
C 15 241 326128 563.42 2061 2130 575.1
C 3 79 31469 51.02 2061 2130 575.1
C 3 111 29029 46.78 2061 2130 575.1
D 13 252 253687 405.17 2007 2085 621.0
D 1 239 227495 362.99 2007 2085 621.0
D 10 85 49432 76.25 2007 2085 621.0

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