ASTROSAT CZTI

Data Quality Report

Orbit 47501

Creation date: 2024-07-10T18:02:55.628694
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/AS1A13_089T01_9000006330_47501cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47501cztM0_level2_quad_clean.evt
Size (bytes)183,012,48037,638,720
Size174.5 MB 35.9 MB
Events in quadrant A2,448,056251,932
Events in quadrant B1,301,524254,762
Events in quadrant C977,769244,120
Events in quadrant D1,862,101219,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093920
B054580
C047270
D071660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2356190.806452%
B2357431.824353%
C235720.084854%
D23571004.242681%

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 2356 2356 0 0 0.00% 0.00%
B 2357 2357 28 28 1.19% 1.19%
C 2357 2357 0 0 0.00% 0.00%
D 2357 2357 78 78 3.31% 3.31%

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 10 83 1431900 26442.7 253 248 54.1
A 13 248 20316 370.66 253 248 54.1
A 9 191 13999 253.98 253 248 54.1
B 0 200 119691 2368.21 250 243 50.4
B 0 186 92819 1835.44 250 243 50.4
B 0 198 75713 1496.29 250 243 50.4
C 0 207 3472 53.79 248 249 59.9
C 12 250 3324 51.32 248 249 59.9
C 9 237 2375 35.48 248 249 59.9
D 2 165 543667 8439.45 248 240 64.4
D 2 249 123151 1908.81 248 240 64.4
D 14 49 71447 1105.85 248 240 64.4

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