ASTROSAT CZTI

Data Quality Report

Orbit 47778

Creation date: 2024-07-29T10:39:06.216332
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/AS1C09_004T02_9000006348_47778cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47778cztM0_level2_quad_clean.evt
Size (bytes)512,481,600103,029,120
Size488.7 MB 98.3 MB
Events in quadrant A6,447,110695,954
Events in quadrant B3,900,857714,163
Events in quadrant C3,309,846674,307
Events in quadrant D4,821,732593,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234781
B0159171
C0145501
D0189891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63311642.590428%
B63311472.321908%
C63321692.668983%
D63325739.049274%

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 7486 6332 32 32 0.43% 0.51%
B 7486 6332 68 68 0.91% 1.07%
C 7487 6333 115 115 1.54% 1.82%
D 7487 6333 411 411 5.49% 6.49%

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 3698297 25571.94 698 683 144.6
A 13 248 43393 295.37 698 683 144.6
A 4 0 8297 52.66 698 683 144.6
B 5 32 757403 5584.24 699 677 135.5
B 0 186 143495 1053.92 699 677 135.5
B 0 200 77571 567.44 699 677 135.5
C 12 2 616136 3871.92 677 678 159.0
C 1 3 25889 158.61 677 678 159.0
C 4 254 16950 102.37 677 678 159.0
D 12 2 1632998 9783.03 662 642 166.9
D 2 37 266658 1594.29 662 642 166.9
D 7 67 110636 659.22 662 642 166.9

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