ASTROSAT CZTI

Data Quality Report

Orbit 28567

Creation date: 2024-06-27T19:53:25.438014
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/AS1A10_110T01_9000004104_28567cztM0_level2.evt modeM0/AS1A10_110T01_9000004104_28567cztM0_level2_quad_clean.evt
Size (bytes)1,796,091,840288,832,320
Size1.7 GB 275.5 MB
Events in quadrant A12,213,0881,797,718
Events in quadrant B12,179,7011,827,759
Events in quadrant C12,022,8071,743,756
Events in quadrant D16,329,6811,697,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0523715
B0518685
C0513245
D0652365

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A244363641.489606%
B244373721.522282%
C244374021.645046%
D244378073.302369%

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 26781 24437 25 25 0.09% 0.10%
B 26782 24437 20 20 0.07% 0.08%
C 26782 24440 14 14 0.05% 0.06%
D 26782 24440 762 762 2.85% 3.12%

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 15 174 453111 743.06 3013 2947 605.8
A 14 238 99476 159.34 3013 2947 605.8
A 13 254 35206 53.25 3013 2947 605.8
B 4 171 266547 457.08 2985 2904 576.8
B 12 111 74235 123.67 2985 2904 576.8
B 10 245 72642 120.9 2985 2904 576.8
C 14 238 459960 672.79 2880 2895 679.4
C 7 247 260393 379.03 2880 2895 679.4
C 10 22 42541 58.36 2880 2895 679.4
D 1 52 2270026 3287.86 2884 2809 689.6
D 8 195 1881302 2724.14 2884 2809 689.6
D 2 250 1031591 1491.91 2884 2809 689.6

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