ASTROSAT CZTI

Data Quality Report

Orbit 37585

Creation date: 2024-06-27T21:41:52.629333
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/AS1T05_053T01_9000005338_37585cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37585cztM0_level2_quad_clean.evt
Size (bytes)1,306,520,640229,878,720
Size1.2 GB 219.2 MB
Events in quadrant A8,453,6611,499,412
Events in quadrant B10,354,1381,465,354
Events in quadrant C8,288,7791,524,593
Events in quadrant D11,410,0211,387,369

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344615
B0407204
C0342384
D0443784

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157331120.711879%
B157339045.745884%
C15733920.584758%
D1573310646.762855%

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 19941 15736 83 83 0.42% 0.53%
B 19941 15736 751 751 3.77% 4.77%
C 19941 15736 58 58 0.29% 0.37%
D 19941 15736 1119 1119 5.61% 7.11%

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 827458 2298.65 1788 1751 359.2
A 13 248 282774 782.33 1788 1751 359.2
A 15 222 195373 539.01 1788 1751 359.2
B 5 255 1367802 4147.84 1737 1693 329.4
B 5 172 1244704 3774.08 1737 1693 329.4
B 0 230 197504 594.53 1737 1693 329.4
C 15 214 675349 1670.08 1737 1751 403.3
C 14 254 336426 829.77 1737 1751 403.3
C 12 249 281559 693.74 1737 1751 403.3
D 2 249 3337438 8002.12 1698 1650 416.9
D 2 153 306918 732.3 1698 1650 416.9
D 12 233 230043 547.88 1698 1650 416.9

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