ASTROSAT CZTI

Data Quality Report

Orbit 51323

Creation date: 2025-03-25T08:08:35.527212
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/AS1C07_001T03_9000006456_51323cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51323cztM0_level2_quad_clean.evt
Size (bytes)696,504,96073,344,960
Size664.2 MB 69.9 MB
Events in quadrant A5,190,297521,152
Events in quadrant B5,072,384555,474
Events in quadrant C10,081,158283,902
Events in quadrant D4,999,907463,772

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194562
B0189682
C0337862
D0189832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56712584.549462%
B56714718.305414%
C5671291951.472403%
D56714898.622818%

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 6541 5672 237 237 3.62% 4.18%
B 6541 5672 319 319 4.88% 5.62%
C 6541 5671 2714 2714 41.49% 47.86%
D 6541 5672 467 467 7.14% 8.23%

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 12 3 2070135 14208.3 585 571 145.7
A 12 194 238610 1634.22 585 571 145.7
A 4 175 135037 923.16 585 571 145.7
B 5 185 658012 5341.52 579 560 123.1
B 0 197 618310 5018.96 579 560 123.1
B 5 172 470319 3816.6 579 560 123.1
C 4 12 7364888 64543.1 404 399 114.1
C 3 233 465897 4079.67 404 399 114.1
C 1 45 267399 2340.01 404 399 114.1
D 2 216 611921 3946.93 554 536 154.9
D 11 176 503501 3247.0 554 536 154.9
D 8 176 411595 2653.68 554 536 154.9

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