ASTROSAT CZTI

Data Quality Report

Orbit 27290

Creation date: 2024-06-27T19:38:30.558584
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/AS1T03_243T01_9000003918_27290cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27290cztM0_level2_quad_clean.evt
Size (bytes)643,253,760118,638,720
Size613.5 MB 113.1 MB
Events in quadrant A4,061,204786,260
Events in quadrant B4,321,794796,203
Events in quadrant C4,017,740752,453
Events in quadrant D6,518,815682,335

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174060
B0181140
C0171980
D0250920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82711071.293677%
B82721792.163926%
C82721521.837524%
D827295911.593327%

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 8811 8274 6 6 0.07% 0.07%
B 8812 8275 26 26 0.30% 0.31%
C 8812 8275 2 2 0.02% 0.02%
D 8812 8275 718 718 8.15% 8.68%

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 13 248 50765 237.91 1036 1014 209.1
A 13 254 14852 66.17 1036 1014 209.1
A 15 174 10286 44.34 1036 1014 209.1
B 0 245 87312 435.88 1028 1002 198.0
B 10 245 61620 306.13 1028 1002 198.0
B 5 172 53098 263.09 1028 1002 198.0
C 14 238 157524 674.34 984 989 232.1
C 15 208 15778 63.71 984 989 232.1
C 2 16 9138 35.11 984 989 232.1
D 12 233 1658748 7117.23 936 910 232.9
D 1 52 1061218 4551.99 936 910 232.9
D 2 250 202398 865.0 936 910 232.9

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