ASTROSAT CZTI

Data Quality Report

Orbit 35286

Creation date: 2022-04-08T08:16:46.156367
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/AS1A11_082T01_9000005056_35286cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35286cztM0_level2_quad_clean.evt
Size (bytes)760,314,24071,686,080
Size725.1 MB 68.4 MB
Events in quadrant A2,806,518490,539
Events in quadrant B9,066,713413,482
Events in quadrant C3,865,122473,256
Events in quadrant D6,896,430387,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120603
B0309272
C0151202
D0244212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5785130.224719%
B5785256044.252377%
C57851672.886776%
D5785158927.467589%

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 8950 5787 1 1 0.01% 0.02%
B 8950 5786 2015 2015 22.51% 34.83%
C 8950 5787 146 146 1.63% 2.52%
D 8950 5787 1505 1505 16.82% 26.01%

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 101796 736.54 678 664 137.3
A 15 169 56841 409.14 678 664 137.3
A 13 6 13207 91.35 678 664 137.3
B 5 172 4769182 45436.39 546 532 105.0
B 5 236 2008493 19132.14 546 532 105.0
B 5 200 119561 1134.13 546 532 105.0
C 0 10 571566 3724.86 658 664 153.3
C 4 254 436344 2842.6 658 664 153.3
C 15 214 235649 1533.16 658 664 153.3
D 7 80 3653667 26043.97 569 554 140.3
D 12 233 381095 2712.97 569 554 140.3
D 2 249 178847 1271.1 569 554 140.3

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