ASTROSAT CZTI

Data Quality Report

Orbit 18531

Creation date: 2024-06-27T17:51:04.657739
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_187T03_9000002748_18531cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18531cztM0_level2_quad_clean.evt
Size (bytes)535,141,44089,527,680
Size510.4 MB 85.4 MB
Events in quadrant A3,521,407564,220
Events in quadrant B3,564,015574,092
Events in quadrant C3,596,814546,005
Events in quadrant D5,036,927526,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152111
B0152861
C0153372
D0199901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7188350.486923%
B7189851.182362%
C7188961.335559%
D71882012.796327%

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 7533 7189 6 6 0.08% 0.08%
B 7534 7190 8 8 0.11% 0.11%
C 7533 7189 20 20 0.27% 0.28%
D 7533 7189 158 158 2.10% 2.20%

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 0 13 87215 488.74 864 845 176.7
A 15 174 65218 364.27 864 845 176.7
A 15 192 18546 100.16 864 845 176.7
B 7 220 103776 611.76 867 842 168.3
B 0 197 20487 116.75 867 842 168.3
B 12 111 20047 114.14 867 842 168.3
C 14 238 128326 652.89 828 835 195.3
C 3 233 120244 611.5 828 835 195.3
C 0 207 107493 546.2 828 835 195.3
D 13 168 1181642 5806.38 830 805 203.4
D 7 238 506982 2488.96 830 805 203.4
D 15 0 96024 468.21 830 805 203.4

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