ASTROSAT CZTI

Data Quality Report

Orbit 44765

Creation date: 2024-06-27T23:06:15.807475
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_004T12_9000006020_44765cztM0_level2.fits modeM0/AS1A13_004T12_9000006020_44765cztM0_level2_quad_clean.evt
Size (bytes)566,720,640104,307,840
Size540.5 MB 99.5 MB
Events in quadrant A8,134,987617,975
Events in quadrant B3,673,345750,571
Events in quadrant C3,187,325726,977
Events in quadrant D5,482,347612,765

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291592
B0152432
C0140872
D0207802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6449128719.956582%
B64481281.985112%
C6448580.899504%
D64486199.599876%

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 7634 6450 1077 1077 14.11% 16.70%
B 7633 6449 55 55 0.72% 0.85%
C 7633 6449 40 40 0.52% 0.62%
D 7633 6449 518 518 6.79% 8.03%

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 3501552 25088.06 679 664 139.5
A 10 83 1956662 14017.07 679 664 139.5
A 13 248 38113 268.37 679 664 139.5
B 0 189 325232 2309.46 725 704 140.5
B 5 255 150826 1068.32 725 704 140.5
B 0 219 99589 703.7 725 704 140.5
C 14 254 135217 796.06 722 726 168.9
C 12 2 112357 660.75 722 726 168.9
C 1 3 84896 498.21 722 726 168.9
D 1 52 1091928 6392.56 682 662 170.7
D 2 249 694730 4065.8 682 662 170.7
D 13 249 273205 1596.54 682 662 170.7

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