ASTROSAT CZTI

Data Quality Report

Orbit 45661

Creation date: 2024-06-27T23:14:41.601257
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_071T07_9000006116_45661cztM0_level2.fits modeM0/AS1A13_071T07_9000006116_45661cztM0_level2_quad_clean.evt
Size (bytes)754,407,360109,825,920
Size719.5 MB 104.7 MB
Events in quadrant A6,158,595808,507
Events in quadrant B4,695,724812,731
Events in quadrant C11,775,536507,958
Events in quadrant D4,768,067720,990

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223903
B0183661
C0396101
D0187301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68251932.827839%
B68264616.753589%
C6826295743.319660%
D68262994.380311%

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 7975 6825 9 9 0.11% 0.13%
B 7976 6826 337 337 4.23% 4.94%
C 7976 6826 2818 2818 35.33% 41.28%
D 7976 6826 188 188 2.36% 2.75%

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 3009418 18239.62 801 785 165.0
A 13 248 19428 113.02 801 785 165.0
A 0 243 14131 80.91 801 785 165.0
B 12 16 1064211 7059.57 784 761 150.6
B 5 172 273871 1813.01 784 761 150.6
B 3 112 71149 467.26 784 761 150.6
C 9 54 8944495 55615.6 694 698 160.8
C 0 64 60478 371.73 694 698 160.8
C 14 254 34172 208.15 694 698 160.8
D 1 52 807233 4086.98 786 763 197.3
D 13 249 381212 1928.02 786 763 197.3
D 5 222 139854 704.88 786 763 197.3

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