ASTROSAT CZTI

Data Quality Report

Orbit 29658

Creation date: 2024-06-27T20:06:33.381931
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/AS1C05_019T01_9000004270_29658cztM0_level2.evt modeM0/AS1C05_019T01_9000004270_29658cztM0_level2_quad_clean.evt
Size (bytes)595,290,240126,069,120
Size567.7 MB 120.2 MB
Events in quadrant A3,153,765863,607
Events in quadrant B3,409,796897,210
Events in quadrant C3,451,488874,335
Events in quadrant D7,591,959748,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135642
B0143272
C0144912
D0269902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225430.690763%
B6225861.381526%
C62251362.184739%
D6225135121.702811%

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 7510 6225 0 0 0.00% 0.00%
B 7510 6226 19 19 0.25% 0.31%
C 7510 6225 7 7 0.09% 0.11%
D 7510 6226 1141 1141 15.19% 18.33%

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 12 96 20440 121.93 811 796 161.1
A 13 254 11399 65.82 811 796 161.1
A 3 137 7419 41.11 811 796 161.1
B 10 245 64745 424.11 820 801 150.8
B 4 171 41875 272.43 820 801 150.8
B 5 172 35682 231.35 820 801 150.8
C 14 238 133538 716.31 808 815 185.3
C 10 22 105182 563.27 808 815 185.3
C 7 247 30659 161.07 808 815 185.3
D 7 80 3839931 22164.89 738 720 173.2
D 8 195 561508 3237.59 738 720 173.2
D 7 238 182896 1051.76 738 720 173.2

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