ASTROSAT CZTI

Data Quality Report

Orbit 19283

Creation date: 2024-06-27T18:01:02.291400
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/AS1A05_107T01_9000002852_19283cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19283cztM0_level2_quad_clean.evt
Size (bytes)565,986,240100,454,400
Size539.8 MB 95.8 MB
Events in quadrant A3,800,896625,739
Events in quadrant B3,850,974640,627
Events in quadrant C3,957,919631,622
Events in quadrant D5,005,068604,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163972
B0164342
C0166722
D0200182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7751700.903109%
B77521071.380289%
C77521792.309082%
D77512503.225390%

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 9421 7753 7 7 0.07% 0.09%
B 9422 7754 7 7 0.07% 0.09%
C 9422 7753 2 2 0.02% 0.03%
D 9421 7753 263 263 2.79% 3.39%

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 5 16 79846 405.65 964 945 194.5
A 13 254 10175 47.45 964 945 194.5
A 0 226 8286 37.74 964 945 194.5
B 12 111 22766 117.4 968 942 185.9
B 3 64 21680 111.56 968 942 185.9
B 11 111 19994 102.49 968 942 185.9
C 14 238 146108 664.95 940 947 218.3
C 3 233 133115 605.43 940 947 218.3
C 9 54 11296 47.41 940 947 218.3
D 7 223 1354427 5877.9 941 913 230.3
D 10 66 40503 171.93 941 913 230.3
D 2 234 34790 147.12 941 913 230.3

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