ASTROSAT CZTI

Data Quality Report

Orbit 00660

Creation date: 2024-06-27T14:01:12.901346
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_124T01_9000000094_00660cztM0_level2.evt modeM0/AS1P01_124T01_9000000094_00660cztM0_level2_quad_clean.evt
Size (bytes)802,601,28054,155,520
Size765.4 MB 51.6 MB
Events in quadrant A5,958,866329,269
Events in quadrant B5,662,535330,694
Events in quadrant C5,575,333326,138
Events in quadrant D6,781,460306,886

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212071
B0203231
C0200701
D0237515

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4942370.748685%
B494220.040469%
C4942511.031971%
D49423426.920275%

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 7098 4943 193 193 2.72% 3.90%
B 7098 4943 90 90 1.27% 1.82%
C 7098 4943 141 141 1.99% 2.85%
D 7098 4943 718 718 10.12% 14.53%

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 15 171 280796 903.39 1413 1403 309.3
A 0 69 103213 329.19 1413 1403 309.3
A 13 147 44022 137.8 1413 1403 309.3
B 8 38 99704 291.9 1430 1435 336.7
B 4 172 22854 63.62 1430 1435 336.7
B 5 176 19709 54.28 1430 1435 336.7
C 9 52 355145 949.02 1324 1374 372.8
C 15 241 8318 18.63 1324 1374 372.8
C 9 83 6153 12.82 1324 1374 372.8
D 1 4 904146 2291.34 1247 1294 394.0
D 2 152 270979 684.43 1247 1294 394.0
D 13 221 251643 635.36 1247 1294 394.0

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