ASTROSAT CZTI

Data Quality Report

Orbit 43819

Creation date: 2024-06-27T22:56:10.126153
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_43819cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43819cztM0_level2_quad_clean.evt
Size (bytes)662,319,360101,024,640
Size631.6 MB 96.3 MB
Events in quadrant A5,538,206689,700
Events in quadrant B5,081,849736,230
Events in quadrant C4,474,371697,076
Events in quadrant D8,915,316479,626

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208252
B0193772
C0176122
D0309703

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65435708.711600%
B65434847.397218%
C65434346.633043%
D6542210632.191990%

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 7623 6543 428 428 5.61% 6.54%
B 7623 6543 293 293 3.84% 4.48%
C 7623 6543 341 341 4.47% 5.21%
D 7622 6542 1773 1773 23.26% 27.10%

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 15 223 1551952 10088.58 742 729 153.8
A 10 83 981649 6379.54 742 729 153.8
A 13 248 63391 407.53 742 729 153.8
B 5 235 1045360 7047.78 757 735 148.2
B 0 200 379205 2553.43 757 735 148.2
B 5 172 225886 1519.03 757 735 148.2
C 15 174 1088253 6252.39 743 748 173.9
C 15 158 237185 1359.35 743 748 173.9
C 3 233 96857 552.56 743 748 173.9
D 10 102 2513833 14794.5 660 638 169.9
D 12 33 2308369 13584.99 660 638 169.9
D 5 235 779777 4586.58 660 638 169.9

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