ASTROSAT CZTI

Data Quality Report

Orbit 45269

Creation date: 2024-06-27T23:11:45.177186
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_024T03_9000006064_45269cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45269cztM0_level2_quad_clean.evt
Size (bytes)474,554,880105,474,240
Size452.6 MB 100.6 MB
Events in quadrant A5,199,436712,985
Events in quadrant B3,215,123747,714
Events in quadrant C3,096,127717,406
Events in quadrant D5,569,865578,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202451
B0137162
C0135161
D0210291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62591512.412526%
B6258831.326302%
C6259450.718965%
D625983413.324812%

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 7439 6259 27 27 0.36% 0.43%
B 7438 6258 48 48 0.65% 0.77%
C 7439 6259 30 30 0.40% 0.48%
D 7439 6259 756 756 10.16% 12.08%

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 2372005 15871.86 719 704 149.4
A 13 248 19510 125.87 719 704 149.4
A 0 243 10147 63.2 719 704 149.4
B 0 168 181312 1276.27 726 705 141.5
B 4 171 30611 211.33 726 705 141.5
B 5 255 21873 149.59 726 705 141.5
C 14 254 125819 744.48 715 720 168.0
C 12 2 101952 602.45 715 720 168.0
C 3 233 33333 194.08 715 720 168.0
D 13 249 1836241 10940.77 662 643 167.8
D 2 249 505861 3011.27 662 643 167.8
D 11 241 193272 1148.13 662 643 167.8

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