ASTROSAT CZTI

Data Quality Report

Orbit 04318

Creation date: 2024-06-27T14:40:19.457915
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/AS1G05_219T01_9000000540_04318cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04318cztM0_level2_quad_clean.evt
Size (bytes)590,336,64089,536,320
Size563.0 MB 85.4 MB
Events in quadrant A3,672,991555,236
Events in quadrant B5,283,928537,827
Events in quadrant C3,517,791543,120
Events in quadrant D4,867,606525,210

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01642
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016696122
B021563220
C016466119
D020252189

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7918570.719879%
B78901792.268695%
C7911220.278094%
D78921802.280791%

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 8491 7960 19 19 0.22% 0.24%
B 8491 7956 6 6 0.07% 0.08%
C 8491 7961 1 1 0.01% 0.01%
D 8491 7955 98 98 1.15% 1.23%

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 50 79103 413.29 912 891 189.2
A 13 251 35210 181.35 912 891 189.2
A 13 14 24512 124.82 912 891 189.2
B 3 0 1457502 8210.54 913 891 177.4
B 8 3 95611 533.91 913 891 177.4
B 14 167 58076 322.34 913 891 177.4
C 9 247 52129 247.36 881 884 207.2
C 14 48 17804 81.67 881 884 207.2
C 13 61 7385 31.38 881 884 207.2
D 2 63 1141307 5327.47 871 843 214.1
D 13 223 80997 374.42 871 843 214.1
D 2 37 77381 357.53 871 843 214.1

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