ASTROSAT CZTI

Data Quality Report

Orbit 44168

Creation date: 2024-06-27T23:00:00.865372
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_079T01_9000005956_44168cztM0_level2.fits modeM0/AS1A13_079T01_9000005956_44168cztM0_level2_quad_clean.evt
Size (bytes)534,173,760113,832,000
Size509.4 MB 108.6 MB
Events in quadrant A6,758,201759,360
Events in quadrant B4,163,774806,402
Events in quadrant C3,188,854772,182
Events in quadrant D5,139,742639,751

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251792
B0171263
C0142482
D0198372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67345978.865459%
B67333224.782415%
C6734991.470151%
D673477911.568162%

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 8994 6737 359 359 3.99% 5.33%
B 8993 6736 132 132 1.47% 1.96%
C 8994 6737 13 13 0.14% 0.19%
D 8994 6737 613 613 6.82% 9.10%

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 2231478 13758.69 784 770 162.1
A 10 83 1455773 8974.25 784 770 162.1
A 13 6 15222 89.14 784 770 162.1
B 5 172 387077 2512.8 787 765 153.7
B 5 255 294692 1911.87 787 765 153.7
B 0 219 225535 1462.03 787 765 153.7
C 14 254 105904 583.85 769 775 180.1
C 15 208 27253 147.05 769 775 180.1
C 1 16 20097 107.31 769 775 180.1
D 13 187 1606053 8811.68 724 701 182.2
D 5 235 198312 1084.67 724 701 182.2
D 1 52 138874 758.42 724 701 182.2

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