ASTROSAT CZTI

Data Quality Report

Orbit 12091

Creation date: 2024-06-27T16:22:19.360183
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/AS1G08_065T01_9000001796_12091cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12091cztM0_level2_quad_clean.evt
Size (bytes)704,761,920127,062,720
Size672.1 MB 121.2 MB
Events in quadrant A5,187,504818,099
Events in quadrant B5,702,851812,977
Events in quadrant C4,211,754815,167
Events in quadrant D5,635,381780,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213013
B0230022
C0188602
D0229872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89482833.162718%
B89484605.140814%
C89481041.162271%
D89482172.425123%

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 9264 8951 78 78 0.84% 0.87%
B 9264 8951 164 164 1.77% 1.83%
C 9264 8951 1 1 0.01% 0.01%
D 9264 8951 85 85 0.92% 0.95%

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 13 251 540638 2425.87 1088 1065 222.4
A 1 162 153203 684.0 1088 1065 222.4
A 7 144 76940 341.13 1088 1065 222.4
B 4 239 1099253 5269.4 1084 1055 208.4
B 15 204 165462 788.86 1084 1055 208.4
B 11 51 124972 594.58 1084 1055 208.4
C 8 208 12537 46.45 1065 1067 246.9
C 5 96 11010 40.27 1065 1067 246.9
C 8 128 10797 39.4 1065 1067 246.9
D 8 195 597925 2314.57 1053 1020 257.9
D 1 52 502257 1943.6 1053 1020 257.9
D 14 34 130532 502.2 1053 1020 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