ASTROSAT CZTI

Data Quality Report

Orbit 09442

Creation date: 2024-06-27T15:46:01.533269
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/AS1A02_178T01_9000001340_09442cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09442cztM0_level2_quad_clean.evt
Size (bytes)1,068,782,400198,192,960
Size1019.3 MB 189.0 MB
Events in quadrant A9,289,8881,379,570
Events in quadrant B8,674,5881,380,993
Events in quadrant C4,735,426774,424
Events in quadrant D8,554,2991,333,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039018
B039028
C039020
D039016

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415762315
B0402522003
C04054018811
D0410962191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0111
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182281180.647356%
B182711180.645832%
C10529610.579352%
D18236950.520948%

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 20263 18922 4 4 0.02% 0.02%
B 20261 18942 7 7 0.03% 0.04%
C 11280 10685 40 40 0.35% 0.37%
D 20262 18906 48 48 0.24% 0.25%

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 8 5 729097 1696.09 2113 2064 428.7
A 1 162 162341 373.91 2113 2064 428.7
A 14 111 61485 138.62 2113 2064 428.7
B 0 229 160684 394.15 2115 2062 402.4
B 0 214 72929 176.09 2115 2062 402.4
B 0 219 67240 161.96 2115 2062 402.4
C 14 234 179649 661.56 1156 1161 269.8
C 9 68 44309 159.93 1156 1161 269.8
C 13 61 8866 28.56 1156 1161 269.8
D 12 233 322911 613.56 2028 1970 523.1
D 7 71 147086 277.43 2028 1970 523.1
D 1 52 135262 254.82 2028 1970 523.1

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