ASTROSAT CZTI

Data Quality Report

Orbit 32267

Creation date: 2024-06-27T20:38:15.211195
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/AS1A09_131T01_9000004696_32267cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32267cztM0_level2_quad_clean.evt
Size (bytes)825,016,320110,321,280
Size786.8 MB 105.2 MB
Events in quadrant A3,005,502760,238
Events in quadrant B5,024,078774,004
Events in quadrant C3,324,039763,171
Events in quadrant D13,196,582592,028

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132450
B0196780
C0140170
D0436081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6462110.170226%
B6463941.454433%
C64631271.965032%
D6462349454.069947%

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 7577 6463 0 0 0.00% 0.00%
B 7578 6464 2 2 0.03% 0.03%
C 7578 6464 12 12 0.16% 0.19%
D 7577 6463 4564 4564 60.23% 70.62%

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 13 6 16036 99.08 773 760 154.2
A 13 254 12379 75.36 773 760 154.2
A 3 137 7651 44.7 773 760 154.2
B 6 159 1874818 12874.14 777 758 145.6
B 5 172 31191 209.06 777 758 145.6
B 0 229 18460 121.61 777 758 145.6
C 14 238 129026 736.65 751 757 174.1
C 0 10 113132 645.37 751 757 174.1
C 3 233 97482 555.49 751 757 174.1
D 1 52 9232568 61561.04 632 614 150.0
D 8 195 1070413 7133.69 632 614 150.0
D 12 218 217039 1443.18 632 614 150.0

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