ASTROSAT CZTI

Data Quality Report

Orbit 17557

Creation date: 2024-06-27T17:37:56.157039
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/AS1T03_066T01_9000002600_17557cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17557cztM0_level2_quad_clean.evt
Size (bytes)547,064,64088,796,160
Size521.7 MB 84.7 MB
Events in quadrant A6,669,213555,097
Events in quadrant B3,017,021597,453
Events in quadrant C3,062,482567,705
Events in quadrant D3,413,752551,040

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236041
B0124311
C0124531
D0138741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5978135622.683172%
B5977580.970386%
C5977601.003848%
D59771191.990965%

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 7288 5979 1142 1142 15.67% 19.10%
B 7287 5978 0 0 0.00% 0.00%
C 7287 5978 0 0 0.00% 0.00%
D 7287 5978 72 72 0.99% 1.20%

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 14 237 3888103 27099.23 718 704 143.5
A 15 174 18822 126.3 718 704 143.5
A 0 226 6283 38.89 718 704 143.5
B 15 222 20730 138.42 764 745 144.4
B 12 111 16437 108.69 764 745 144.4
B 11 111 14483 95.15 764 745 144.4
C 14 238 115369 675.45 735 741 169.7
C 3 233 72079 420.36 735 741 169.7
C 0 207 9453 51.34 735 741 169.7
D 5 222 304996 1689.77 745 722 180.1
D 13 189 156699 866.21 745 722 180.1
D 13 104 71282 391.85 745 722 180.1

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