ASTROSAT CZTI

Data Quality Report

Orbit 39049

Creation date: 2024-06-27T21:59:45.861666
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_077T06_9000005430_39049cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39049cztM0_level2_quad_clean.evt
Size (bytes)1,107,717,120163,661,760
Size1.0 GB 156.1 MB
Events in quadrant A20,740,138614,751
Events in quadrant B5,356,5171,276,055
Events in quadrant C5,522,6401,213,352
Events in quadrant D8,514,2501,072,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0693894
B0236443
C0235263
D0333843

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11246604553.752445%
B11246550.489063%
C11246510.453495%
D112467196.393384%

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 15306 11249 5695 5695 37.21% 50.63%
B 15306 11249 22 22 0.14% 0.20%
C 15306 11249 44 44 0.29% 0.39%
D 15306 11249 646 646 4.22% 5.74%

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 15782406 82933.22 952 932 190.3
A 10 83 611177 3206.9 952 932 190.3
A 13 248 375033 1965.94 952 932 190.3
B 0 190 318530 1330.64 1245 1211 238.5
B 5 172 109077 452.32 1245 1211 238.5
B 12 111 30476 122.72 1245 1211 238.5
C 15 214 464015 1643.92 1219 1227 281.5
C 14 254 170195 600.21 1219 1227 281.5
C 15 208 111332 391.12 1219 1227 281.5
D 2 249 1093616 3747.24 1193 1156 291.5
D 1 47 1037751 3555.61 1193 1156 291.5
D 13 249 680965 2331.81 1193 1156 291.5

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