ASTROSAT CZTI

Data Quality Report

Orbit 24746

Creation date: 2024-06-27T19:09:25.949376
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/AS1A07_018T08_9000003622_24746cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24746cztM0_level2_quad_clean.evt
Size (bytes)704,047,680119,952,000
Size671.4 MB 114.4 MB
Events in quadrant A4,310,554767,285
Events in quadrant B4,623,508776,721
Events in quadrant C4,629,323746,966
Events in quadrant D7,147,483715,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185952
B0195602
C0195462
D0274532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9029630.697752%
B90301341.483942%
C90301681.860465%
D90305686.290144%

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 10604 9030 1 1 0.01% 0.01%
B 10604 9030 10 10 0.09% 0.11%
C 10604 9030 4 4 0.04% 0.04%
D 10605 9031 403 403 3.80% 4.46%

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 13 254 14903 61.72 1112 1089 223.8
A 12 96 14403 59.49 1112 1089 223.8
A 3 137 10393 41.57 1112 1089 223.8
B 0 190 82439 386.4 1103 1076 210.6
B 15 33 68441 319.92 1103 1076 210.6
B 3 64 40790 188.6 1103 1076 210.6
C 14 238 170000 681.2 1060 1065 248.0
C 10 91 111829 446.64 1060 1065 248.0
C 7 247 93026 370.82 1060 1065 248.0
D 1 52 2346728 9096.16 1057 1024 257.9
D 8 195 647194 2505.71 1057 1024 257.9
D 7 238 111264 427.49 1057 1024 257.9

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