ASTROSAT CZTI

Data Quality Report

Orbit 13226

Creation date: 2024-06-27T16:38:04.040727
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/AS1A04_216T01_9000001968_13226cztM0_level2.evt modeM0/AS1A04_216T01_9000001968_13226cztM0_level2_quad_clean.evt
Size (bytes)2,290,443,840423,135,360
Size2.1 GB 403.5 MB
Events in quadrant A13,552,0612,824,550
Events in quadrant B23,700,4842,536,799
Events in quadrant C12,656,9992,835,325
Events in quadrant D17,554,6872,680,283

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0598186
B0891865
C0579025
D0713925

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05740
B05740
C05740
D05740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281855321.887529%
B28185482317.111939%
C281853191.131808%
D281855391.912365%

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 32081 28190 113 113 0.35% 0.40%
B 32080 28190 2982 2982 9.30% 10.58%
C 32081 28191 13 13 0.04% 0.05%
D 32081 28191 150 150 0.47% 0.53%

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 69 487032 728.42 3271 3202 664.2
A 10 229 231846 344.23 3271 3202 664.2
A 1 162 63058 90.12 3271 3202 664.2
B 4 239 11327497 19929.26 3002 2923 568.2
B 5 32 287170 500.22 3002 2923 568.2
B 3 209 97864 167.08 3002 2923 568.2
C 15 208 187714 252.15 3189 3197 731.8
C 13 61 23128 27.24 3189 3197 731.8
C 8 128 19697 22.55 3189 3197 731.8
D 8 195 4320974 5723.26 3146 3053 754.5
D 1 52 1039758 1374.12 3146 3053 754.5
D 2 234 109029 140.47 3146 3053 754.5

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