ASTROSAT CZTI

Data Quality Report

Orbit 51020

Creation date: 2025-03-04T23:09:29.240506
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/AS1C07_001T02_9000006452_51020cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51020cztM0_level2_quad_clean.evt
Size (bytes)588,778,56097,064,640
Size561.5 MB 92.6 MB
Events in quadrant A6,528,411626,077
Events in quadrant B5,253,907679,028
Events in quadrant C4,554,189588,005
Events in quadrant D4,916,767558,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242890
B0204980
C0186940
D0196870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69894526.467306%
B69893965.666047%
C69884246.067544%
D69884065.809960%

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 6989 6989 341 341 4.88% 4.88%
B 6989 6989 258 258 3.69% 3.69%
C 6988 6988 370 370 5.29% 5.29%
D 6988 6988 356 356 5.09% 5.09%

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 12 3 1177865 6638.3 714 697 177.3
A 4 4 1097688 6186.16 714 697 177.3
A 14 254 272668 1533.7 714 697 177.3
B 4 81 1299465 8506.54 714 690 152.7
B 4 171 373764 2443.51 714 690 152.7
B 0 172 190327 1242.06 714 690 152.7
C 15 1 944100 5045.06 687 680 187.0
C 9 38 183495 977.63 687 680 187.0
C 13 3 135876 722.98 687 680 187.0
D 8 176 990371 5177.77 690 664 191.1
D 3 12 279512 1458.83 690 664 191.1
D 10 172 174283 908.31 690 664 191.1

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