ASTROSAT CZTI

Data Quality Report

Orbit 28954

Creation date: 2024-06-27T19:58:28.534993
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_123T08_9000004152_28954cztM0_level2.evt modeM0/AS1A10_123T08_9000004152_28954cztM0_level2_quad_clean.evt
Size (bytes)1,455,687,360250,312,320
Size1.4 GB 238.7 MB
Events in quadrant A8,727,4741,589,476
Events in quadrant B8,823,8801,645,173
Events in quadrant C9,615,3651,578,269
Events in quadrant D15,677,8861,501,257

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381263
B0381883
C0405933
D0590353

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183902981.620446%
B183903461.881457%
C183915913.213528%
D1839013177.161501%

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 20130 18394 13 13 0.06% 0.07%
B 20130 18394 3 3 0.01% 0.02%
C 20131 18395 5 5 0.02% 0.03%
D 20130 18394 988 988 4.91% 5.37%

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 12 96 94973 209.49 2215 2167 443.0
A 13 254 32193 67.78 2215 2167 443.0
A 15 192 29152 60.91 2215 2167 443.0
B 10 245 54339 123.97 2208 2153 420.9
B 12 111 52946 120.67 2208 2153 420.9
B 11 111 47838 108.53 2208 2153 420.9
C 3 233 764022 1570.79 2112 2123 485.0
C 14 238 414269 849.71 2112 2123 485.0
C 14 254 108225 218.75 2112 2123 485.0
D 8 195 3609250 7273.57 2093 2035 495.9
D 1 52 2337245 4708.71 2093 2035 495.9
D 7 80 1205054 2425.76 2093 2035 495.9

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