ASTROSAT CZTI

Data Quality Report

Orbit 20240318_T05_185T01_9000006128_level2

Creation date: 2024-03-22T10:35:58.630350
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/AS1T05_185T01_9000006128cztM0_level2.fits modeM0/AS1T05_185T01_9000006128cztM0_level2_quad_clean.evt
Size (bytes)886,383,360900,593,280
Size845.3 MB 858.9 MB
Events in quadrant A5,148,0305,364,389
Events in quadrant B5,025,1325,392,532
Events in quadrant C5,449,5005,308,653
Events in quadrant D4,289,9884,290,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020460
B020460
C020460
D020460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03522070
B03269220
C02164490
D03738260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01410
C01410
D01410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10094670847.017613%
B10094590268.941503%
C10094514941.480014%
D1009461393213.801438%

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 115006 100876 0 0 0.00% 0.00%
B 115006 100916 0 0 0.00% 0.00%
C 115006 100935 0 0 0.00% 0.00%
D 115006 100719 0 0 0.00% 0.00%

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 7 110 4207 8.74 1343 1259 337.1
A 0 29 4084 8.38 1343 1259 337.1
A 15 236 4058 8.3 1343 1259 337.1
B 2 9 4603 12.71 1328 1263 262.7
B 2 8 3742 9.43 1328 1263 262.7
B 3 17 3649 9.08 1328 1263 262.7
C 3 202 4309 7.97 1440 1342 372.2
C 3 203 4265 7.85 1440 1342 372.2
C 1 81 4151 7.55 1440 1342 372.2
D 10 189 3080 5.87 1232 1122 333.4
D 10 113 3060 5.81 1232 1122 333.4
D 4 16 3059 5.81 1232 1122 333.4

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