ASTROSAT CZTI

Data Quality Report

Orbit 37845

Creation date: 2024-06-27T21:45:14.570859
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_001T12_9000005352_37845cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37845cztM0_level2_quad_clean.evt
Size (bytes)501,471,36082,074,240
Size478.2 MB 78.3 MB
Events in quadrant A3,026,646534,028
Events in quadrant B3,316,812532,200
Events in quadrant C2,877,290528,426
Events in quadrant D5,565,675477,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127813
B0139682
C0123432
D0206782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5903170.287989%
B59031732.930713%
C5903390.660681%
D590369211.722853%

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 7215 5904 11 11 0.15% 0.19%
B 7215 5904 130 130 1.80% 2.20%
C 7215 5904 34 34 0.47% 0.58%
D 7215 5904 584 584 8.09% 9.89%

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 366874 2792.3 647 635 131.2
A 15 222 95027 719.67 647 635 131.2
A 9 143 17941 131.95 647 635 131.2
B 5 172 530167 4306.35 639 621 123.0
B 4 81 51700 415.38 639 621 123.0
B 0 213 43095 345.41 639 621 123.0
C 15 214 247363 1671.56 632 636 147.6
C 0 10 137936 930.2 632 636 147.6
C 4 0 9219 58.15 632 636 147.6
D 1 52 1687815 11330.74 607 589 148.9
D 2 249 878761 5897.46 607 589 148.9
D 13 249 224249 1502.01 607 589 148.9

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