ASTROSAT CZTI

Data Quality Report

Orbit 46431

Creation date: 2024-06-27T23:23:07.630612
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_062T01_9000006208_46431cztM0_level2.fits modeM0/AS1A13_062T01_9000006208_46431cztM0_level2_quad_clean.evt
Size (bytes)486,478,080116,346,240
Size463.9 MB 111.0 MB
Events in quadrant A6,051,323775,635
Events in quadrant B3,282,309822,087
Events in quadrant C3,421,036777,507
Events in quadrant D4,749,505694,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220212
B0137562
C0143152
D0185482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64912924.498536%
B64911572.418734%
C64911081.663842%
D64913865.946695%

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 7656 6491 32 32 0.42% 0.49%
B 7656 6491 0 0 0.00% 0.00%
C 7656 6492 24 24 0.31% 0.37%
D 7656 6491 276 276 3.61% 4.25%

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 2915269 17683.21 804 789 164.8
A 7 3 11948 67.71 804 789 164.8
A 13 254 10325 57.86 804 789 164.8
B 0 189 75784 476.92 806 782 157.3
B 12 111 20643 126.29 806 782 157.3
B 0 190 19792 120.88 806 782 157.3
C 14 254 241036 1292.06 791 796 185.9
C 3 233 46859 247.74 791 796 185.9
C 12 249 40130 211.55 791 796 185.9
D 13 249 1579053 8093.21 783 761 195.0
D 1 52 62230 315.2 783 761 195.0
D 11 224 47486 239.6 783 761 195.0

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