ASTROSAT CZTI

Data Quality Report

Orbit 00120

Creation date: 2024-06-27T13:56:40.494203
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_003T01_9000000002_00120cztM0_level2.fits modeM0/AS1P01_003T01_9000000002_00120cztM0_level2_quad_clean.evt
Size (bytes)622,428,48044,104,320
Size593.6 MB 42.1 MB
Events in quadrant A5,620,389253,932
Events in quadrant B5,689,024259,827
Events in quadrant C5,257,578256,687
Events in quadrant D6,133,103251,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198352
B0200281
C0187471
D0213661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4448130.292266%
B4448481.079137%
C4448120.269784%
D44481453.259892%

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 6038 4449 170 170 2.82% 3.82%
B 6038 4449 171 171 2.83% 3.84%
C 6038 4449 116 116 1.92% 2.61%
D 6038 4449 500 500 8.28% 11.24%

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 8 3 42647 178.55 1392 1360 231.2
A 15 22 35271 146.65 1392 1360 231.2
A 14 35 28809 118.71 1392 1360 231.2
B 3 2 75143 273.24 1374 1361 270.0
B 5 85 64744 234.73 1374 1361 270.0
B 8 236 45168 162.23 1374 1361 270.0
C 8 224 219520 624.61 1231 1273 349.4
C 2 52 57159 159.94 1231 1273 349.4
C 10 57 46020 128.06 1231 1273 349.4
D 10 82 518195 1501.66 1300 1311 344.2
D 9 35 63912 181.87 1300 1311 344.2
D 5 35 48461 136.98 1300 1311 344.2

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