ASTROSAT CZTI

Data Quality Report

Orbit 13634

Creation date: 2024-06-27T16:43:44.545673
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/AS1G08_038T01_9000002018_13634cztM0_level2.evt modeM0/AS1G08_038T01_9000002018_13634cztM0_level2_quad_clean.evt
Size (bytes)644,218,56083,914,560
Size614.4 MB 80.0 MB
Events in quadrant A2,918,924541,879
Events in quadrant B3,222,660552,541
Events in quadrant C2,941,354584,122
Events in quadrant D10,042,404464,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119942
B0129891
C0119351
D0338461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5688400.703235%
B5688550.966948%
C5688140.246132%
D5688270547.556259%

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 7029 5690 11 11 0.16% 0.19%
B 7029 5690 9 9 0.13% 0.16%
C 7029 5690 0 0 0.00% 0.00%
D 7029 5690 2519 2519 35.84% 44.27%

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 69 67183 451.11 732 719 147.3
A 1 162 22225 145.97 732 719 147.3
A 1 178 7034 42.86 732 719 147.3
B 3 64 200522 1475.32 725 710 135.4
B 0 214 53170 387.34 725 710 135.4
B 0 229 46014 334.5 725 710 135.4
C 3 233 162867 997.9 711 718 162.5
C 13 61 5120 27.09 711 718 162.5
C 0 207 4146 21.1 711 718 162.5
D 5 222 6034937 46726.62 540 527 129.1
D 13 122 1712835 13259.02 540 527 129.1
D 8 195 133175 1027.14 540 527 129.1

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