ASTROSAT CZTI

Data Quality Report

Orbit 43794

Creation date: 2024-06-27T22:55:51.074445
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_018T01_9000005906_43794cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43794cztM0_level2_quad_clean.evt
Size (bytes)564,698,880116,959,680
Size538.5 MB 111.5 MB
Events in quadrant A4,837,580784,844
Events in quadrant B3,760,908831,608
Events in quadrant C5,873,759764,014
Events in quadrant D5,919,631701,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190262
B0154282
C0217133
D0221802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66004036.106061%
B66002253.409091%
C65995698.622519%
D65995398.167904%

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 7700 6601 94 94 1.22% 1.42%
B 7700 6601 43 43 0.56% 0.65%
C 7699 6600 652 652 8.47% 9.88%
D 7699 6600 352 352 4.57% 5.33%

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 1030489 6143.0 814 799 167.6
A 13 248 368729 2195.02 814 799 167.6
A 15 223 236969 1408.96 814 799 167.6
B 0 200 178139 1121.2 816 793 158.2
B 5 235 87948 551.0 816 793 158.2
B 5 172 79439 497.21 816 793 158.2
C 15 174 1626281 8924.29 786 794 182.1
C 15 157 692259 3796.3 786 794 182.1
C 15 158 171700 938.31 786 794 182.1
D 12 33 1365817 6786.0 796 770 201.2
D 1 52 328058 1627.03 796 770 201.2
D 5 235 270060 1338.71 796 770 201.2

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