ASTROSAT CZTI

Data Quality Report

Orbit 19494

Creation date: 2024-06-27T18:03:26.575441
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_062T01_9000002892_19494cztM0_level2.evt modeM0/AS1A05_062T01_9000002892_19494cztM0_level2_quad_clean.evt
Size (bytes)510,024,96096,554,880
Size486.4 MB 92.1 MB
Events in quadrant A3,277,041625,632
Events in quadrant B3,357,328636,519
Events in quadrant C3,748,795612,534
Events in quadrant D4,621,858595,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137282
B0139792
C0151922
D0179612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6505350.538048%
B6505741.137586%
C65051141.752498%
D65052674.104535%

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 7600 6505 1 1 0.01% 0.02%
B 7600 6505 23 23 0.30% 0.35%
C 7600 6505 27 27 0.36% 0.42%
D 7600 6505 229 229 3.01% 3.52%

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 10 253 137783 837.39 812 796 163.6
A 0 226 6930 37.5 812 796 163.6
A 13 254 6761 36.46 812 796 163.6
B 7 220 81364 526.02 808 789 153.2
B 4 171 46867 300.81 808 789 153.2
B 0 190 27212 172.5 808 789 153.2
C 5 112 211044 1140.14 790 797 184.4
C 9 221 203220 1097.71 790 797 184.4
C 3 233 123370 664.7 790 797 184.4
D 1 52 1075660 5632.44 792 773 190.8
D 7 238 373927 1955.34 792 773 190.8
D 12 218 133024 693.0 792 773 190.8

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