ASTROSAT CZTI

Data Quality Report

Orbit 20240701_A13_093T25_9000006324_level2

Creation date: 2024-07-04T13:19:25.509936
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_093T25_9000006324cztM0_level2.fits modeM0/AS1A13_093T25_9000006324cztM0_level2_quad_clean.evt
Size (bytes)1,607,500,8001,545,658,560
Size1.5 GB 1.4 GB
Events in quadrant A9,384,0948,989,084
Events in quadrant B9,365,0509,341,716
Events in quadrant C9,706,3148,932,802
Events in quadrant D7,576,5806,916,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02230
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07100750
B04191640
C04017680
D05980150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036600
B036640
C036660
D036660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184577130987.096225%
B18471051292.776785%
C18465126381.428641%
D1847092729114.775133%

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 207454 184756 0 0 0.00% 0.00%
B 207454 184813 0 0 0.00% 0.00%
C 207454 184798 0 0 0.00% 0.00%
D 207454 180200 0 0 0.00% 0.00%

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 7 110 7837 8.79 2449 2270 633.7
A 14 95 7133 7.67 2449 2270 633.7
A 0 29 7105 7.63 2449 2270 633.7
B 2 9 9086 13.82 2474 2344 487.8
B 2 8 7244 10.04 2474 2344 487.8
B 3 17 6777 9.09 2474 2344 487.8
C 1 81 7401 7.51 2567 2373 669.6
C 1 80 7169 7.16 2567 2373 669.6
C 3 202 7119 7.09 2567 2373 669.6
D 10 189 5536 5.88 2177 1975 605.1
D 3 14 5500 5.83 2177 1975 605.1
D 12 6 5475 5.78 2177 1975 605.1

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