ASTROSAT CZTI

Data Quality Report

Orbit 43765

Creation date: 2024-06-27T22:55:30.706243
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_026T01_9000005904_43765cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43765cztM0_level2_quad_clean.evt
Size (bytes)619,865,280117,414,720
Size591.1 MB 112.0 MB
Events in quadrant A6,163,838794,945
Events in quadrant B5,729,174779,078
Events in quadrant C4,552,230807,397
Events in quadrant D5,969,719696,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234642
B0216092
C0180052
D0224662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68514756.933294%
B685182612.056634%
C68511882.744125%
D68516559.560648%

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 7956 6852 210 210 2.64% 3.06%
B 7956 6852 509 509 6.40% 7.43%
C 7956 6852 127 127 1.60% 1.85%
D 7956 6852 359 359 4.51% 5.24%

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 1079924 6347.62 823 807 170.0
A 14 63 721349 4238.4 823 807 170.0
A 13 248 621205 3649.33 823 807 170.0
B 0 200 1622808 10239.26 799 776 158.4
B 5 172 202575 1273.88 799 776 158.4
B 0 213 187673 1179.81 799 776 158.4
C 3 233 783778 4172.07 804 807 187.7
C 15 158 386650 2055.97 804 807 187.7
C 15 157 97273 514.02 804 807 187.7
D 5 235 732492 3638.35 790 767 201.1
D 1 52 591928 2939.42 790 767 201.1
D 13 249 320318 1588.9 790 767 201.1

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