ASTROSAT CZTI

Data Quality Report

Orbit 47991

Creation date: 2024-08-12T21:50:29.278444
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_062T02_9000006384_47991cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47991cztM0_level2_quad_clean.evt
Size (bytes)1,333,048,320307,719,360
Size1.2 GB 293.5 MB
Events in quadrant A19,849,1372,056,480
Events in quadrant B8,885,2122,081,509
Events in quadrant C8,666,0102,028,470
Events in quadrant D10,499,5901,861,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0735612
B0397717
C0397042
D0448762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187087153.821894%
B187053731.994119%
C187072311.234832%
D187076043.228738%

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 19538 18710 123 123 0.63% 0.66%
B 19537 18708 31 31 0.16% 0.17%
C 19537 18709 43 43 0.22% 0.23%
D 19537 18709 459 459 2.35% 2.45%

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 10669284 24210.12 2118 2077 440.6
A 14 248 936417 2120.56 2118 2077 440.6
A 7 3 29062 61.24 2118 2077 440.6
B 7 221 257313 613.28 2101 2035 416.2
B 5 255 160986 381.86 2101 2035 416.2
B 12 111 53646 123.99 2101 2035 416.2
C 14 254 232276 466.69 2084 2093 493.2
C 15 208 165021 330.33 2084 2093 493.2
C 14 67 44724 86.43 2084 2093 493.2
D 2 37 1022885 1946.98 2090 2024 524.3
D 2 249 467103 886.99 2090 2024 524.3
D 2 165 323305 612.74 2090 2024 524.3

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