ASTROSAT CZTI

Data Quality Report

Orbit 43482

Creation date: 2024-06-27T22:52:30.097947
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/AS1A12_018T01_9000005874_43482cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43482cztM0_level2_quad_clean.evt
Size (bytes)840,081,600169,274,880
Size801.2 MB 161.4 MB
Events in quadrant A7,706,2911,147,710
Events in quadrant B5,570,2241,181,183
Events in quadrant C5,084,4131,110,765
Events in quadrant D11,897,485934,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308383
B0235773
C0220593
D0429083

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108471831.687102%
B10847360.331889%
C10846190.175180%
D10846129411.930666%

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 13623 10849 144 144 1.06% 1.33%
B 13623 10849 14 14 0.10% 0.13%
C 13622 10848 16 16 0.12% 0.15%
D 13621 10847 1258 1258 9.24% 11.60%

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 15 222 1258082 5331.32 1158 1132 235.8
A 10 83 1177307 4988.72 1158 1132 235.8
A 15 237 493470 2088.24 1158 1132 235.8
B 0 245 226366 1007.27 1159 1126 223.6
B 0 190 207961 924.97 1159 1126 223.6
B 0 189 191403 850.92 1159 1126 223.6
C 15 214 450981 1711.9 1131 1136 262.8
C 3 233 147517 557.06 1131 1136 262.8
C 15 159 49990 185.92 1131 1136 262.8
D 1 52 2940066 11049.8 1083 1048 266.0
D 13 249 1268457 4765.07 1083 1048 266.0
D 2 16 1245908 4680.29 1083 1048 266.0

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