ASTROSAT CZTI

Data Quality Report

Orbit 30641

Creation date: 2024-06-27T20:18:03.308049
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/AS1A10_103T02_9000004416_30641cztM0_level2.evt modeM0/AS1A10_103T02_9000004416_30641cztM0_level2_quad_clean.evt
Size (bytes)739,483,200101,695,680
Size705.2 MB 97.0 MB
Events in quadrant A3,502,404680,302
Events in quadrant B5,336,600682,011
Events in quadrant C3,546,914667,042
Events in quadrant D9,578,313603,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143752
B0204312
C0145242
D0328692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63961071.672921%
B63962003.126954%
C63961342.095059%
D6396109117.057536%

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 7571 6397 48 48 0.63% 0.75%
B 7571 6397 66 66 0.87% 1.03%
C 7571 6397 11 11 0.15% 0.17%
D 7571 6397 1356 1356 17.91% 21.20%

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 233957 1400.01 839 825 166.5
A 8 192 23441 135.81 839 825 166.5
A 13 254 11813 65.99 839 825 166.5
B 6 159 1703841 11010.13 828 808 154.7
B 6 36 343777 2217.3 828 808 154.7
B 12 111 18364 113.5 828 808 154.7
C 14 238 136010 715.38 819 828 189.0
C 0 10 90646 475.32 819 828 189.0
C 3 233 61165 319.3 819 828 189.0
D 8 195 5983135 29669.56 793 779 201.6
D 12 227 236602 1169.57 793 779 201.6
D 12 33 217315 1073.91 793 779 201.6

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